Calculators & Converters
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Open this tool instantly from your toolbox.
Open toolConvert between 150+ units across 15 categories — instant, free, 100% offline after load.
15 categories • 150+ units • Type in any field to convert instantly
Unit Converter is a free online tool that instantly converts between hundreds of units across 15+ categories including Length, Weight, Temperature, Area, Volume, Speed, Time, Energy, Pressure, Power, Data Storage, Frequency, Fuel Efficiency, Angle and Cooking. Everything is calculated instantly in your browser — no data is sent to any server.
How to use: Select a category, enter a value in any field, and all other units update instantly. Switch categories using the tabs at the top.
The common categories - length, weight, temperature, volume, and a few others - covering the conversions people look up most often, like kilometers to miles or Celsius to Fahrenheit.