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{}JSON viewer & formatter100% local ZIPImage compressor100% local QRQR code generator & reader100% local PASSPassword and passphrase generator100% local %Percentage calculator100% local REGEXRegex tester and replacer100% local

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Development

102 tools

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Regex tester and replacer Test regular expressions, inspect matches and preview replacements locally in your browser. 100% local

SHA hash generator Calculate SHA-1, SHA-256, SHA-384 and SHA-512 hashes for text or files with Web Crypto. 100% local

SimplePostman A reduced HTTP client to build requests, generate cURL and inspect responses in the browser. External API

UUID and random key generator Generate UUID v4 values and random strings with Web Crypto, fully local in the browser. 100% local

Password and passphrase generator Create passwords and secure passphrases without storing data or making network calls. 100% local

YAML formatter and validator Validate, format and convert YAML and JSON locally in your browser. 100% local

Base64 encoder & decoder Encode plain text to Base64 and decode it locally in your browser. 100% local

HTML/CSS/JS formatter Format and minify code snippets locally. 100% local

CSV parser & converter Preview CSV and convert it to JSON, Markdown or HTML. 100% local

cURL builder Generate HTTP requests and code snippets. 100% local

CSS color converter Convert HEX, RGB, HSL, HWB and CSS color names. 100% local

Visual text diff checker Compare two texts locally with line and word-level visual differences. 100% local

JSON viewer & formatter View, validate and format JSON locally. 100% local

JWT decoder Decode JWT tokens locally in your browser. 100% local

MD5 generator Generate MD5 hashes in the browser. 100% local

SQL formatter Format, minify and export SQL queries locally. 100% local

Timestamp & timezone converter Convert Unix timestamps, ISO dates and time zones. 100% local

URL encoder & decoder Encode URLs and query parameters. 100% local

URL inspector Analyze URLs for developers. 100% local

XML formatter & validator Format, validate and minify XML locally. 100% local

HTML entity encoder and decoder Encode reserved HTML characters or decode entities locally. 100% local

JSON to TypeScript converter Generate readable TypeScript interfaces from JSON objects and arrays. 100% local

Number base converter Convert integers between binary, octal, decimal and hexadecimal. 100% local

Unix chmod calculator Build Unix file permissions visually and copy numeric or symbolic values. 100% local

Cron expression builder Build standard five-field cron expressions from readable schedule controls. 100% local

Text to binary Text to binary locally in your browser, with a clear result you can copy. 100% local

Binary to text Binary to text locally in your browser, with a clear result you can copy. 100% local

JSON to CSV JSON to CSV locally in your browser, with a clear result you can copy. 100% local

JSON path extractor JSON path extractor locally in your browser, with a clear result you can copy. 100% local

Query string parser Query string parser locally in your browser, with a clear result you can copy. 100% local

Query string builder Query string builder locally in your browser, with a clear result you can copy. 100% local

Unicode escape converter Unicode escape converter locally in your browser, with a clear result you can copy. 100% local

ASCII table lookup ASCII table lookup locally in your browser, with a clear result you can copy. 100% local

Hex to text Hex to text locally in your browser, with a clear result you can copy. 100% local

Text to hex Text to hex locally in your browser, with a clear result you can copy. 100% local

HTTP status lookup HTTP status lookup locally in your browser, with a clear result you can copy. 100% local

MIME type lookup MIME type lookup locally in your browser, with a clear result you can copy. 100% local

Port number lookup Port number lookup locally in your browser, with a clear result you can copy. 100% local

User-agent parser User-agent parser locally in your browser, with a clear result you can copy. 100% local

Gitignore generator Gitignore generator locally in your browser, with a clear result you can copy. 100% local

Docker run builder Docker run builder locally in your browser, with a clear result you can copy. 100% local

SSH command builder SSH command builder locally in your browser, with a clear result you can copy. 100% local

Regex escape tool Regex escape tool locally in your browser, with a clear result you can copy. 100% local

Regex flags explainer Regex flags explainer locally in your browser, with a clear result you can copy. 100% local

JSON key sorter JSON key sorter locally in your browser, with a clear result you can copy. 100% local

JSON flattener JSON flattener locally in your browser, with a clear result you can copy. 100% local

JSON unflattener JSON unflattener locally in your browser, with a clear result you can copy. 100% local

JSON Schema generator JSON Schema generator locally in your browser, with a clear result you can copy. 100% local

XML escape and unescape XML escape and unescape locally in your browser, with a clear result you can copy. 100% local

SQL IN list builder SQL IN list builder locally in your browser, with a clear result you can copy. 100% local

Environment variable parser Environment variable parser locally in your browser, with a clear result you can copy. 100% local

INI to JSON converter INI to JSON converter locally in your browser, with a clear result you can copy. 100% local

Semantic version comparator Semantic version comparator locally in your browser, with a clear result you can copy. 100% local

Semantic version bumper Semantic version bumper locally in your browser, with a clear result you can copy. 100% local

Color contrast checker Color contrast checker locally in your browser, with a clear result you can copy. 100% local

CSS clamp calculator CSS clamp calculator locally in your browser, with a clear result you can copy. 100% local

Text data URI generator Text data URI generator locally in your browser, with a clear result you can copy. 100% local

Checksum comparator Checksum comparator locally in your browser, with a clear result you can copy. 100% local

Random test data generator Random test data generator locally in your browser, with a clear result you can copy. 100% local

Fake user generator Fake user generator locally in your browser, with a clear result you can copy. 100% local

API response mocker API response mocker locally in your browser, with a clear result you can copy. 100% local

GraphQL query minifier GraphQL query minifier locally in your browser, with a clear result you can copy. 100% local

ULID generator ULID generator instantly and privately in your browser. 100% local

Nano ID generator Nano ID generator instantly and privately in your browser. 100% local

One-time code generator One-time code generator instantly and privately in your browser. 100% local

Random PIN generator Random PIN generator instantly and privately in your browser. 100% local

Random HEX color generator Random HEX color generator instantly and privately in your browser. 100% local

CSS gradient generator CSS gradient generator instantly and privately in your browser. 100% local

CSS shadow generator CSS shadow generator instantly and privately in your browser. 100% local

Border radius generator Border radius generator instantly and privately in your browser. 100% local

CSS grid generator CSS grid generator instantly and privately in your browser. 100% local

Flexbox CSS generator Flexbox CSS generator instantly and privately in your browser. 100% local

Media query generator Media query generator instantly and privately in your browser. 100% local

Placeholder avatar SVG Placeholder avatar SVG instantly and privately in your browser. 100% local

Initials avatar SVG Initials avatar SVG instantly and privately in your browser. 100% local

SVG pattern generator SVG pattern generator instantly and privately in your browser. 100% local

SVG blob generator SVG blob generator instantly and privately in your browser. 100% local

SVG wave generator SVG wave generator instantly and privately in your browser. 100% local

Chart data generator Chart data generator instantly and privately in your browser. 100% local

CSV test data generator CSV test data generator instantly and privately in your browser. 100% local

Code placeholder generator Code placeholder generator instantly and privately in your browser. 100% local

Git branch name generator Git branch name generator instantly and privately in your browser. 100% local

Commit message helper Commit message helper instantly and privately in your browser. 100% local

Package name generator Package name generator instantly and privately in your browser. 100% local

Docker Compose generator Docker Compose generator instantly and privately in your browser. 100% local

Nginx redirect generator Nginx redirect generator instantly and privately in your browser. 100% local

.htaccess redirect generator .htaccess redirect generator instantly and privately in your browser. 100% local

Content Security Policy builder Content Security Policy builder instantly and privately in your browser. 100% local

Permissions Policy builder Permissions Policy builder instantly and privately in your browser. 100% local

Cache-Control builder Cache-Control builder instantly and privately in your browser. 100% local

CORS header builder CORS header builder instantly and privately in your browser. 100% local

Cron expression explainer Cron expression explainer instantly and privately in your browser. 100% local

Unix signal reference Unix signal reference instantly and privately in your browser. 100% local

Keyboard key reference Keyboard key reference instantly and privately in your browser. 100% local

CSS easing reference CSS easing reference instantly and privately in your browser. 100% local

HTML doctype generator HTML doctype generator instantly and privately in your browser. 100% local

Regex cheatsheet Regex cheatsheet instantly and privately in your browser. 100% local

HTTP header reference HTTP header reference instantly and privately in your browser. 100% local

Country code lookup Country code lookup instantly and privately in your browser. 100% local

Language code lookup Language code lookup instantly and privately in your browser. 100% local

Timezone finder Timezone finder instantly and privately in your browser. 100% local

File signature reference File signature reference instantly and privately in your browser. 100% local

Images

11 tools

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Screenshot enhancer Turn screenshots into polished images with backgrounds, colors and PNG, JPG, WebP or SVG exports. 100% local

App icon generator Create app icons with images, text, borders and local ZIP exports. 100% local

Web icon generator Turn one image into favicons and web icons with visual position and zoom controls. 100% local

Favicon generator Create favicons from text or images. 100% local

Image compressor Reduce image file size locally. 100% local

Image converter Convert between PNG, JPEG and WebP. 100% local

Image information Inspect image dimensions and metadata locally. 100% local

Photo censor Pixelate, blur or cover image areas locally. 100% local

QR code generator & reader Generate QR codes and read local QR images. 100% local

SVG placeholder generator Create SVG placeholders and data URLs. 100% local

Aspect ratio calculator Resize images and video proportionally or simplify width-to-height ratios. 100% local

Internet & maps

6 tools

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Robots.txt and sitemap generator Create robots.txt and a basic XML sitemap from pasted URLs, without crawling or server requests. 100% local

Meta tags and Open Graph generator Generate title, description, canonical, Open Graph and Twitter Cards with a local preview. 100% local

DNS lookup Query DNS records with Google Public DNS. External API · Provider: Google Public DNS

Address coordinates Find GPS coordinates from an address. External API · Provider: OpenStreetMap Nominatim

IP information Look up technical IP information. External API · Provider: ipwho.is

Social URL preview Check Open Graph and Twitter Cards. External API

Text & writing

69 tools

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Character counter Count characters, words, sentences and repeated terms. 100% local

Lorem Ipsum generator Generate filler text by letters, paragraphs or pages. 100% local

Markdown writer & preview Markdown editor with live preview. 100% local

Text case converter Convert text to uppercase, lowercase, title case, sentence case, camelCase or snake_case. 100% local

SEO slug generator Turn titles into clean, readable and search-friendly URL slugs. 100% local

List cleaner and sorter Trim, deduplicate, sort and remove empty lines from pasted lists. 100% local

Reverse text Reverse text locally in your browser, with a clear result you can copy. 100% local

Remove line breaks Remove line breaks locally in your browser, with a clear result you can copy. 100% local

Whitespace normalizer Whitespace normalizer locally in your browser, with a clear result you can copy. 100% local

Word frequency counter Word frequency counter locally in your browser, with a clear result you can copy. 100% local

Reading time calculator Reading time calculator locally in your browser, with a clear result you can copy. 100% local

Text to Morse code Text to Morse code locally in your browser, with a clear result you can copy. 100% local

Morse code to text Morse code to text locally in your browser, with a clear result you can copy. 100% local

NATO phonetic alphabet converter NATO phonetic alphabet converter locally in your browser, with a clear result you can copy. 100% local

Duplicate line finder Duplicate line finder locally in your browser, with a clear result you can copy. 100% local

Add line numbers Add line numbers locally in your browser, with a clear result you can copy. 100% local

Remove line numbers Remove line numbers locally in your browser, with a clear result you can copy. 100% local

Add prefix and suffix Add prefix and suffix locally in your browser, with a clear result you can copy. 100% local

Text repeater Text repeater locally in your browser, with a clear result you can copy. 100% local

Word shuffler Word shuffler locally in your browser, with a clear result you can copy. 100% local

Sentence sorter Sentence sorter locally in your browser, with a clear result you can copy. 100% local

Email extractor Email extractor locally in your browser, with a clear result you can copy. 100% local

URL extractor URL extractor locally in your browser, with a clear result you can copy. 100% local

Number extractor Number extractor locally in your browser, with a clear result you can copy. 100% local

Remove accents Remove accents locally in your browser, with a clear result you can copy. 100% local

Invisible character detector Invisible character detector locally in your browser, with a clear result you can copy. 100% local

Text statistics Text statistics locally in your browser, with a clear result you can copy. 100% local

Alphabetical word sorter Alphabetical word sorter locally in your browser, with a clear result you can copy. 100% local

Palindrome checker Palindrome checker locally in your browser, with a clear result you can copy. 100% local

Remove duplicate words Remove duplicate words instantly and privately in your browser. 100% local

Smart quotes converter Smart quotes converter instantly and privately in your browser. 100% local

Tabs and spaces converter Tabs and spaces converter instantly and privately in your browser. 100% local

Text indent tool Text indent tool instantly and privately in your browser. 100% local

Wrap text to width Wrap text to width instantly and privately in your browser. 100% local

Text truncator Text truncator instantly and privately in your browser. 100% local

Excerpt generator Excerpt generator instantly and privately in your browser. 100% local

Initials generator Initials generator instantly and privately in your browser. 100% local

Acronym generator Acronym generator instantly and privately in your browser. 100% local

Hashtag generator Hashtag generator instantly and privately in your browser. 100% local

Keyword density checker Keyword density checker instantly and privately in your browser. 100% local

Stop-word remover Stop-word remover instantly and privately in your browser. 100% local

Punctuation remover Punctuation remover instantly and privately in your browser. 100% local

Emoji remover Emoji remover instantly and privately in your browser. 100% local

HTML tag stripper HTML tag stripper instantly and privately in your browser. 100% local

Markdown link extractor Markdown link extractor instantly and privately in your browser. 100% local

CSV column extractor CSV column extractor instantly and privately in your browser. 100% local

Log line filter Log line filter instantly and privately in your browser. 100% local

Exclude matching lines Exclude matching lines instantly and privately in your browser. 100% local

Sort lines by length Sort lines by length instantly and privately in your browser. 100% local

Rotate lines Rotate lines instantly and privately in your browser. 100% local

Transpose text grid Transpose text grid instantly and privately in your browser. 100% local

Join lines Join lines instantly and privately in your browser. 100% local

Split text into chunks Split text into chunks instantly and privately in your browser. 100% local

Random line picker Random line picker instantly and privately in your browser. 100% local

Numbered list to bullets Numbered list to bullets instantly and privately in your browser. 100% local

Bullets to numbered list Bullets to numbered list instantly and privately in your browser. 100% local

Quote every line Quote every line instantly and privately in your browser. 100% local

Unquote lines Unquote lines instantly and privately in your browser. 100% local

Pad text to width Pad text to width instantly and privately in your browser. 100% local

Plain text find and replace Plain text find and replace instantly and privately in your browser. 100% local

Substring counter Substring counter instantly and privately in your browser. 100% local

Compare word lists Compare word lists instantly and privately in your browser. 100% local

Common words finder Common words finder instantly and privately in your browser. 100% local

Unique words extractor Unique words extractor instantly and privately in your browser. 100% local

Anagram checker Anagram checker instantly and privately in your browser. 100% local

Isogram checker Isogram checker instantly and privately in your browser. 100% local

Pangram checker Pangram checker instantly and privately in your browser. 100% local

Vowel and consonant counter Vowel and consonant counter instantly and privately in your browser. 100% local

Readability score estimator Readability score estimator instantly and privately in your browser. 100% local

Finance

44 tools

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Unit converter Convert length, mass, temperature and digital storage units instantly and offline. 100% local

Currency converter Convert amounts between currencies with Frankfurter, exchange date, swap action and copyable result. External API · Provider: Frankfurter

VAT calculator Calculate VAT from prices with or without tax. 100% local

Percentage calculator Calculate percentages, changes, increases and discounts with clear formulas. 100% local

Tip calculator Tip calculator locally in your browser, with a clear result you can copy. 100% local

Split bill calculator Split bill calculator locally in your browser, with a clear result you can copy. 100% local

Loan payment calculator Loan payment calculator locally in your browser, with a clear result you can copy. 100% local

Compound interest calculator Compound interest calculator locally in your browser, with a clear result you can copy. 100% local

Simple interest calculator Simple interest calculator locally in your browser, with a clear result you can copy. 100% local

Savings goal calculator Savings goal calculator locally in your browser, with a clear result you can copy. 100% local

ROI calculator ROI calculator locally in your browser, with a clear result you can copy. 100% local

Profit margin calculator Profit margin calculator locally in your browser, with a clear result you can copy. 100% local

Markup calculator Markup calculator locally in your browser, with a clear result you can copy. 100% local

Break-even calculator Break-even calculator locally in your browser, with a clear result you can copy. 100% local

Salary to hourly rate Salary to hourly rate locally in your browser, with a clear result you can copy. 100% local

Freelance rate calculator Freelance rate calculator locally in your browser, with a clear result you can copy. 100% local

Fuel cost calculator Fuel cost calculator locally in your browser, with a clear result you can copy. 100% local

Electricity cost calculator Electricity cost calculator locally in your browser, with a clear result you can copy. 100% local

Running pace calculator Running pace calculator locally in your browser, with a clear result you can copy. 100% local

BMI calculator BMI calculator locally in your browser, with a clear result you can copy. 100% local

Daily calorie needs estimator Daily calorie needs estimator locally in your browser, with a clear result you can copy. 100% local

Body fat estimator Body fat estimator locally in your browser, with a clear result you can copy. 100% local

Rule of three calculator Rule of three calculator locally in your browser, with a clear result you can copy. 100% local

Fraction simplifier Fraction simplifier locally in your browser, with a clear result you can copy. 100% local

Fraction to decimal Fraction to decimal locally in your browser, with a clear result you can copy. 100% local

Decimal to fraction Decimal to fraction locally in your browser, with a clear result you can copy. 100% local

Scientific notation converter Scientific notation converter locally in your browser, with a clear result you can copy. 100% local

Average calculator Average calculator locally in your browser, with a clear result you can copy. 100% local

Median calculator Median calculator locally in your browser, with a clear result you can copy. 100% local

Age calculator Age calculator locally in your browser, with a clear result you can copy. 100% local

Date difference calculator Date difference calculator locally in your browser, with a clear result you can copy. 100% local

Business days calculator Business days calculator locally in your browser, with a clear result you can copy. 100% local

Add or subtract days Add or subtract days locally in your browser, with a clear result you can copy. 100% local

ISO week number calculator ISO week number calculator locally in your browser, with a clear result you can copy. 100% local

Day of year calculator Day of year calculator locally in your browser, with a clear result you can copy. 100% local

Leap year checker Leap year checker locally in your browser, with a clear result you can copy. 100% local

UTC offset time converter UTC offset time converter locally in your browser, with a clear result you can copy. 100% local

Countdown calculator Countdown calculator locally in your browser, with a clear result you can copy. 100% local

Hours and minutes calculator Hours and minutes calculator locally in your browser, with a clear result you can copy. 100% local

Cooking unit converter Cooking unit converter locally in your browser, with a clear result you can copy. 100% local

Angle converter Angle converter locally in your browser, with a clear result you can copy. 100% local

Speed converter Speed converter locally in your browser, with a clear result you can copy. 100% local

Pressure converter Pressure converter locally in your browser, with a clear result you can copy. 100% local

Energy converter Energy converter locally in your browser, with a clear result you can copy. 100% local

Calculators

70 tools

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Sales tax calculator Sales tax calculator instantly and privately in your browser. 100% local

Discount price calculator Discount price calculator instantly and privately in your browser. 100% local

Unit price calculator Unit price calculator instantly and privately in your browser. 100% local

Sales commission calculator Sales commission calculator instantly and privately in your browser. 100% local

Net price from gross Net price from gross instantly and privately in your browser. 100% local

Gross profit calculator Gross profit calculator instantly and privately in your browser. 100% local

Contribution margin calculator Contribution margin calculator instantly and privately in your browser. 100% local

Inventory turnover calculator Inventory turnover calculator instantly and privately in your browser. 100% local

Customer lifetime value Customer lifetime value instantly and privately in your browser. 100% local

Churn rate calculator Churn rate calculator instantly and privately in your browser. 100% local

Conversion rate calculator Conversion rate calculator instantly and privately in your browser. 100% local

Cost per click calculator Cost per click calculator instantly and privately in your browser. 100% local

CPM calculator CPM calculator instantly and privately in your browser. 100% local

Cost per acquisition Cost per acquisition instantly and privately in your browser. 100% local

Return on ad spend Return on ad spend instantly and privately in your browser. 100% local

Email open rate Email open rate instantly and privately in your browser. 100% local

Click-through rate Click-through rate instantly and privately in your browser. 100% local

Occupancy rate Occupancy rate instantly and privately in your browser. 100% local

Revenue per available room Revenue per available room instantly and privately in your browser. 100% local

Straight-line depreciation Straight-line depreciation instantly and privately in your browser. 100% local

Declining balance depreciation Declining balance depreciation instantly and privately in your browser. 100% local

Present value calculator Present value calculator instantly and privately in your browser. 100% local

Future value calculator Future value calculator instantly and privately in your browser. 100% local

Inflation impact calculator Inflation impact calculator instantly and privately in your browser. 100% local

Future purchasing power Future purchasing power instantly and privately in your browser. 100% local

Emergency fund calculator Emergency fund calculator instantly and privately in your browser. 100% local

Retirement savings projection Retirement savings projection instantly and privately in your browser. 100% local

Mortgage affordability estimate Mortgage affordability estimate instantly and privately in your browser. 100% local

Debt-to-income ratio Debt-to-income ratio instantly and privately in your browser. 100% local

Credit utilization ratio Credit utilization ratio instantly and privately in your browser. 100% local

Rent-to-income ratio Rent-to-income ratio instantly and privately in your browser. 100% local

Annualized return calculator Annualized return calculator instantly and privately in your browser. 100% local

CAGR calculator CAGR calculator instantly and privately in your browser. 100% local

Dividend yield calculator Dividend yield calculator instantly and privately in your browser. 100% local

Earnings per share Earnings per share instantly and privately in your browser. 100% local

Price-to-earnings ratio Price-to-earnings ratio instantly and privately in your browser. 100% local

Working capital calculator Working capital calculator instantly and privately in your browser. 100% local

Current ratio calculator Current ratio calculator instantly and privately in your browser. 100% local

Quick ratio calculator Quick ratio calculator instantly and privately in your browser. 100% local

Cash runway calculator Cash runway calculator instantly and privately in your browser. 100% local

Absolute difference Absolute difference instantly and privately in your browser. 100% local

Ratio calculator Ratio calculator instantly and privately in your browser. 100% local

Quadratic equation solver Quadratic equation solver instantly and privately in your browser. 100% local

Circle calculator Circle calculator instantly and privately in your browser. 100% local

Rectangle calculator Rectangle calculator instantly and privately in your browser. 100% local

Triangle area calculator Triangle area calculator instantly and privately in your browser. 100% local

Trapezoid area calculator Trapezoid area calculator instantly and privately in your browser. 100% local

Sphere calculator Sphere calculator instantly and privately in your browser. 100% local

Cylinder calculator Cylinder calculator instantly and privately in your browser. 100% local

Cone calculator Cone calculator instantly and privately in your browser. 100% local

Pythagorean theorem calculator Pythagorean theorem calculator instantly and privately in your browser. 100% local

2D distance calculator 2D distance calculator instantly and privately in your browser. 100% local

Midpoint calculator Midpoint calculator instantly and privately in your browser. 100% local

Slope calculator Slope calculator instantly and privately in your browser. 100% local

Standard deviation calculator Standard deviation calculator instantly and privately in your browser. 100% local

Variance calculator Variance calculator instantly and privately in your browser. 100% local

Weighted average calculator Weighted average calculator instantly and privately in your browser. 100% local

Z-score calculator Z-score calculator instantly and privately in your browser. 100% local

Factorial calculator Factorial calculator instantly and privately in your browser. 100% local

Prime number checker Prime number checker instantly and privately in your browser. 100% local

Prime factorization Prime factorization instantly and privately in your browser. 100% local

Least common multiple Least common multiple instantly and privately in your browser. 100% local

Greatest common divisor Greatest common divisor instantly and privately in your browser. 100% local

Modulo calculator Modulo calculator instantly and privately in your browser. 100% local

Logarithm calculator Logarithm calculator instantly and privately in your browser. 100% local

Nth root calculator Nth root calculator instantly and privately in your browser. 100% local

Ohm’s law calculator Ohm’s law calculator instantly and privately in your browser. 100% local

Series resistor calculator Series resistor calculator instantly and privately in your browser. 100% local

Parallel resistor calculator Parallel resistor calculator instantly and privately in your browser. 100% local

LED resistor calculator LED resistor calculator instantly and privately in your browser. 100% local

Converters

50 tools

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Area converter Area converter instantly and privately in your browser. 100% local

Volume converter Volume converter instantly and privately in your browser. 100% local

Force converter Force converter instantly and privately in your browser. 100% local

Torque converter Torque converter instantly and privately in your browser. 100% local

Power converter Power converter instantly and privately in your browser. 100% local

Frequency converter Frequency converter instantly and privately in your browser. 100% local

Acceleration converter Acceleration converter instantly and privately in your browser. 100% local

Density converter Density converter instantly and privately in your browser. 100% local

Volume flow converter Volume flow converter instantly and privately in your browser. 100% local

Mass flow converter Mass flow converter instantly and privately in your browser. 100% local

Dynamic viscosity converter Dynamic viscosity converter instantly and privately in your browser. 100% local

Kinematic viscosity converter Kinematic viscosity converter instantly and privately in your browser. 100% local

Electric current converter Electric current converter instantly and privately in your browser. 100% local

Voltage converter Voltage converter instantly and privately in your browser. 100% local

Resistance converter Resistance converter instantly and privately in your browser. 100% local

Electric charge converter Electric charge converter instantly and privately in your browser. 100% local

Capacitance converter Capacitance converter instantly and privately in your browser. 100% local

Inductance converter Inductance converter instantly and privately in your browser. 100% local

Magnetic flux converter Magnetic flux converter instantly and privately in your browser. 100% local

Magnetic field converter Magnetic field converter instantly and privately in your browser. 100% local

Illuminance converter Illuminance converter instantly and privately in your browser. 100% local

Luminance converter Luminance converter instantly and privately in your browser. 100% local

Absorbed radiation dose converter Absorbed radiation dose converter instantly and privately in your browser. 100% local

Equivalent radiation dose converter Equivalent radiation dose converter instantly and privately in your browser. 100% local

Radioactivity converter Radioactivity converter instantly and privately in your browser. 100% local

Typography unit converter Typography unit converter instantly and privately in your browser. 100% local

Data transfer rate converter Data transfer rate converter instantly and privately in your browser. 100% local

Angular velocity converter Angular velocity converter instantly and privately in your browser. 100% local

Angular acceleration converter Angular acceleration converter instantly and privately in your browser. 100% local

Molar concentration converter Molar concentration converter instantly and privately in your browser. 100% local

Mass concentration converter Mass concentration converter instantly and privately in your browser. 100% local

Astronomical distance converter Astronomical distance converter instantly and privately in your browser. 100% local

Microscopic length converter Microscopic length converter instantly and privately in your browser. 100% local

Rainfall depth converter Rainfall depth converter instantly and privately in your browser. 100% local

Water hardness converter Water hardness converter instantly and privately in your browser. 100% local

Salinity converter Salinity converter instantly and privately in your browser. 100% local

Electrical conductivity converter Electrical conductivity converter instantly and privately in your browser. 100% local

Thermal conductivity converter Thermal conductivity converter instantly and privately in your browser. 100% local

Heat flux converter Heat flux converter instantly and privately in your browser. 100% local

Heat capacity converter Heat capacity converter instantly and privately in your browser. 100% local

Specific heat converter Specific heat converter instantly and privately in your browser. 100% local

Surface tension converter Surface tension converter instantly and privately in your browser. 100% local

Permeability converter Permeability converter instantly and privately in your browser. 100% local

Compressibility converter Compressibility converter instantly and privately in your browser. 100% local

Molar volume converter Molar volume converter instantly and privately in your browser. 100% local

Amount of substance converter Amount of substance converter instantly and privately in your browser. 100% local

Catalytic activity converter Catalytic activity converter instantly and privately in your browser. 100% local

Energy density converter Energy density converter instantly and privately in your browser. 100% local

Battery charge converter Battery charge converter instantly and privately in your browser. 100% local

Pixel density converter Pixel density converter instantly and privately in your browser. 100% local

Fast, private and useful

Online tools that work for you, not with your data

Alon Tools brings together free utilities for development, images, writing, SEO and calculations. Whenever technically possible, the work happens inside your browser.

346 local tools

No file or text uploads. Many keep working after you lose your connection.

No accounts or friction

Open a tool and use it directly, including on mobile and in dark mode.

Public APIs clearly identified

When a lookup needs the network, its card identifies the provider before you open it.