Unit Converter
Choose a measurement, select the units and get a fast, accurate conversion. Explore everyday, engineering and scientific conversions or check dated currency exchange rates.
EverydayLength17 units · Instant conversion →EverydayArea12 units · Instant conversion →EverydayVolume20 units · Instant conversion →EverydayMass14 units · Instant conversion →EverydayTemperature4 units · Instant conversion →EverydaySpeed10 units · Instant conversion →EverydayTime12 units · Instant conversion →EverydayPressure13 units · Instant conversion →EverydayEnergy14 units · Instant conversion →EverydayPower10 units · Instant conversion →EngineeringForce4 units · Instant conversion →EverydayAngle3 units · Instant conversion →DigitalData Storage14 units · Instant conversion →EverydayFrequency7 units · Instant conversion →ElectricalElectric Current6 units · Instant conversion →ElectricalVoltage7 units · Instant conversion →ElectricalResistance6 units · Instant conversion →EngineeringAcceleration4 units · Instant conversion →EngineeringAngular Acceleration4 units · Instant conversion →EngineeringTorque6 units · Instant conversion →EngineeringDensity7 units · Instant conversion →EngineeringSpecific Volume5 units · Instant conversion →FluidsVolume Flow Rate11 units · Instant conversion →FluidsMass Flow Rate8 units · Instant conversion →FluidsMolar Flow Rate5 units · Instant conversion →FluidsDynamic Viscosity6 units · Instant conversion →FluidsKinematic Viscosity6 units · Instant conversion →FluidsSurface Tension5 units · Instant conversion →FluidsMass Flux4 units · Instant conversion →ElectricalElectric Charge7 units · Instant conversion →ElectricalCapacitance6 units · Instant conversion →ElectricalInductance5 units · Instant conversion →ElectricalConductance5 units · Instant conversion →ElectricalResistivity5 units · Instant conversion →ElectricalConductivity5 units · Instant conversion →ElectricalElectric Field Strength5 units · Instant conversion →ElectricalSurface Charge Density4 units · Instant conversion →ElectricalLinear Charge Density4 units · Instant conversion →ElectricalVolume Charge Density4 units · Instant conversion →MagnetismMagnetic Flux5 units · Instant conversion →MagnetismMagnetic Flux Density7 units · Instant conversion →MagnetismMagnetic Field Strength4 units · Instant conversion →ThermalThermal Conductivity4 units · Instant conversion →ThermalHeat Capacity5 units · Instant conversion →ThermalSpecific Heat Capacity5 units · Instant conversion →ThermalHeat Flux Density4 units · Instant conversion →ThermalHeat Transfer Coefficient3 units · Instant conversion →ThermalTemperature Difference4 units · Instant conversion →LightIllumination5 units · Instant conversion →LightLuminance5 units · Instant conversion →LightLuminous Intensity4 units · Instant conversion →DigitalData Transfer Rate12 units · Instant conversion →ScienceRadioactivity8 units · Instant conversion →ScienceAbsorbed Dose6 units · Instant conversion →ScienceEquivalent Dose6 units · Instant conversion →ScienceSubstance5 units · Instant conversion →ScienceMolar Concentration5 units · Instant conversion →ScienceMolar Mass5 units · Instant conversion →EverydayFuel Economy7 units · Instant conversion →EngineeringAngular Velocity6 units · Instant conversion →CurrencyCurrencyDated exchange rates · Frankfurter →
How to convert units
- Choose the measurement category you need.
- Enter a finite number and select the source and destination units.
- Read the result instantly and swap the units to reverse the calculation.
Most measurements use defined conversion factors. Temperature uses scale offsets; fuel efficiency uses reciprocal relationships. Currency rates vary over time and are retrieved separately.
Frequently asked questions
Is this unit converter free?
Yes. Physical unit conversions run in your browser with no account. Currency rates require an internet request to an external rate provider.
Can I convert US and imperial units?
Yes. Where definitions differ, US and imperial units are labeled separately, including gallons and fluid ounces.
How precise are conversions?
The converter uses standard double-precision arithmetic and formatted results. It is not a substitute for calibrated instruments or specialist engineering validation.