Unit Converters
Convert length, weight, volume, temperature and 150+ units
34 tools available
Digital Storage
2 toolsElectrical
6 toolsElectric Current Converter
Convert amperes, milliamps and microamps
Voltage Converter
Convert volts, millivolts and kilovolts
Resistance Converter
Convert ohms, kiloohms and megaohms
Capacitance Converter
Convert farads, microfarads and picofarads
Inductance Converter
Convert henries and millihenries
Electric Charge Converter
Convert coulombs, ampere-hours and mAh
Fuel Economy
1 toolLength
1 toolMagnetic Field
1 toolMass
2 toolsTemperature
1 toolAbout Unit Converters
Convert across length, weight, volume, temperature, area, speed, pressure and dozens more unit families, with precise results and handy reference tables for every conversion.
It works fully offline in your browser, free and unlimited — the built-in reference tables also make it a useful study aid for students and engineers.
Frequently Asked Questions
How accurate are the unit conversions?▾
Conversions use exact internationally-defined factors (for example 1 inch = 25.4 mm by definition). Results display to high precision, and reference tables show every intermediate unit so you can verify any figure.
Does the converter need internet access?▾
After the page loads, conversions run offline in your browser - useful on flights or restricted networks. Nothing you type is transmitted anywhere.
Which unit families are covered?▾
Over thirty families: length, weight, volume, temperature, area, speed, pressure, energy, power, fuel economy, cooking measures, data storage, torque, frequency, angle, density, electrical units and more.
Can I convert cooking measurements like cups to grams?▾
Yes - the cooking converter handles cups, tablespoons, millilitres and weight measures for common kitchen ingredients, distinguishing volume from mass so recipes turn out right.