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Reference tool

Unit Converter

Quick, direct unit conversion across common scientific, engineering, digital, and everyday measurements.

Reference tool

Length converter

Enter a value, choose compatible units, and copy the result. Calculations stay in your browser.

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General

LengthDistance and length units.9 unitsAreaSurface area units.6 unitsVolumeLiquid and cubic volume units.9 unitsMassMass and weight units.7 unitsTemperatureAbsolute temperature scales with correct offsets.4 unitsTimeDurations and time intervals.6 unitsAnglePlanar angular units.5 units

Mechanical

Velocity / speedLinear speed and velocity units. Mach is intentionally excluded because it depends on propagation conditions.9 unitsAccelerationRate of change in velocity.7 unitsAngular velocityAngular rate units.6 unitsAngular accelerationAngular acceleration units.3 unitsForceForce units.8 unitsTorqueMoment of force units.9 unitsPressure / stressPressure and stress units.13 unitsWork / energyEnergy, work, and heat units.16 unitsPowerPower and rate of energy transfer.10 units

Fluids

Volumetric flow rateVolumetric flow rate units; US and Imperial gallons stay distinct.13 unitsMass flow rateMass per time units.9 unitsDynamic viscosityDynamic viscosity units.6 unitsKinematic viscosityKinematic viscosity units.5 units

Thermal

Temperature differenceTemperature intervals; unlike absolute temperatures, these have no offset.4 unitsThermal conductivityThermal conductivity units.3 unitsHeat fluxHeat flow per area units.4 unitsSpecific heat capacityHeat capacity per mass and temperature interval.5 unitsHeat transfer coefficientHeat transfer rate per area and temperature interval.3 units

Electrical

Electric currentElectric current units.5 unitsVoltageElectric potential difference units.5 unitsResistanceElectrical resistance units.5 unitsConductanceElectrical conductance units.3 unitsCapacitanceElectrical capacitance units.5 unitsInductanceElectrical inductance units.4 unitsElectric chargeElectric charge units.6 unitsElectric field strengthElectric field strength; V/m and N/C are dimensionally equivalent.3 unitsResistivityElectrical resistivity units.3 unitsConductivityElectrical conductivity units.4 units

Magnetism

Magnetic fluxMagnetic flux units.4 unitsMagnetic flux densityMagnetic flux density units.5 unitsMagnetic field strengthMagnetic field strength units.3 units

Radiation

FrequencyCycles and repetition rates; wavelength remains a length conversion and requires wave speed to relate to frequency.7 unitsRadioactivityActivity units.7 unitsAbsorbed doseAbsorbed radiation dose units; intentionally separate from equivalent dose.4 unitsEquivalent doseEquivalent radiation dose units; intentionally separate from absorbed dose.4 units

Light

Luminous intensityLuminous intensity is not directly interchangeable with flux or illuminance.1 unitsLuminous fluxLuminous flux is not directly interchangeable with intensity or illuminance.1 unitsIlluminanceIlluminance units.2 unitsLuminanceLuminance units.2 units

Chemistry

Amount of substanceAmount of substance units.5 unitsMolar concentrationMolar concentration only; converting to mass concentration requires molar mass.4 unitsMass concentrationMass concentration only; converting to molar concentration requires molar mass.6 unitsDensityMass density units.8 units

Digital

Data storageDigital storage units using decimal and binary multiples.7 unitsData transfer rateDigital transfer rate units.7 units

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