Online scientific and technical converters
Choose source and target units, enter a value and get the conversion immediately. Swap both units without retyping the value.
Browse tools ↓No accounts or friction
All converters tools
Open any utility and start working. Each card tells you whether processing is local or requires a public API.
Area converterArea converter instantly and privately in your browser.100% local→Volume converterVolume converter instantly and privately in your browser.100% local→Force converterForce converter instantly and privately in your browser.100% local→Torque converterTorque converter instantly and privately in your browser.100% local→Power converterPower converter instantly and privately in your browser.100% local→Frequency converterFrequency converter instantly and privately in your browser.100% local→Acceleration converterAcceleration converter instantly and privately in your browser.100% local→Density converterDensity converter instantly and privately in your browser.100% local→Volume flow converterVolume flow converter instantly and privately in your browser.100% local→Mass flow converterMass flow converter instantly and privately in your browser.100% local→Dynamic viscosity converterDynamic viscosity converter instantly and privately in your browser.100% local→Kinematic viscosity converterKinematic viscosity converter instantly and privately in your browser.100% local→Electric current converterElectric current converter instantly and privately in your browser.100% local→Voltage converterVoltage converter instantly and privately in your browser.100% local→Resistance converterResistance converter instantly and privately in your browser.100% local→Electric charge converterElectric charge converter instantly and privately in your browser.100% local→Capacitance converterCapacitance converter instantly and privately in your browser.100% local→Inductance converterInductance converter instantly and privately in your browser.100% local→Magnetic flux converterMagnetic flux converter instantly and privately in your browser.100% local→Magnetic field converterMagnetic field converter instantly and privately in your browser.100% local→Illuminance converterIlluminance converter instantly and privately in your browser.100% local→Luminance converterLuminance converter instantly and privately in your browser.100% local→Absorbed radiation dose converterAbsorbed radiation dose converter instantly and privately in your browser.100% local→Equivalent radiation dose converterEquivalent radiation dose converter instantly and privately in your browser.100% local→Radioactivity converterRadioactivity converter instantly and privately in your browser.100% local→Typography unit converterTypography unit converter instantly and privately in your browser.100% local→Data transfer rate converterData transfer rate converter instantly and privately in your browser.100% local→Angular velocity converterAngular velocity converter instantly and privately in your browser.100% local→Angular acceleration converterAngular acceleration converter instantly and privately in your browser.100% local→Molar concentration converterMolar concentration converter instantly and privately in your browser.100% local→Mass concentration converterMass concentration converter instantly and privately in your browser.100% local→Astronomical distance converterAstronomical distance converter instantly and privately in your browser.100% local→Microscopic length converterMicroscopic length converter instantly and privately in your browser.100% local→Rainfall depth converterRainfall depth converter instantly and privately in your browser.100% local→Water hardness converterWater hardness converter instantly and privately in your browser.100% local→Salinity converterSalinity converter instantly and privately in your browser.100% local→Electrical conductivity converterElectrical conductivity converter instantly and privately in your browser.100% local→Thermal conductivity converterThermal conductivity converter instantly and privately in your browser.100% local→Heat flux converterHeat flux converter instantly and privately in your browser.100% local→Heat capacity converterHeat capacity converter instantly and privately in your browser.100% local→Specific heat converterSpecific heat converter instantly and privately in your browser.100% local→Surface tension converterSurface tension converter instantly and privately in your browser.100% local→Permeability converterPermeability converter instantly and privately in your browser.100% local→Compressibility converterCompressibility converter instantly and privately in your browser.100% local→Molar volume converterMolar volume converter instantly and privately in your browser.100% local→Amount of substance converterAmount of substance converter instantly and privately in your browser.100% local→Catalytic activity converterCatalytic activity converter instantly and privately in your browser.100% local→Energy density converterEnergy density converter instantly and privately in your browser.100% local→Battery charge converterBattery charge converter instantly and privately in your browser.100% local→Pixel density converterPixel density converter instantly and privately in your browser.100% local→
Simple tools for real tasks
Convert scientific, electrical, thermal and technical quantities locally with swappable units.
Each tool focuses on one task, with a visible primary action, useful examples and results you can copy or download. There are no unnecessary dashboards or registration flows.
Frequently asked questions
Are these tools free?
Yes. You can use them without creating an account or artificial usage limits.
Are my data or files uploaded?
Tools marked 100% local process everything in your browser. If a utility needs an external API, it is clearly identified before you open it.
Do they work on mobile and in dark mode?
Yes. The interface is mobile first, keyboard accessible and supports both light and dark modes.