Unit Converter
Convert between units of length, weight, temperature, area, volume, speed, and data online. Free instant unit conversion.
Result appears here
About Unit Converter
Convert between hundreds of measurement units across 7 categories: Length (km, miles, feet, inches), Weight (kg, lbs, oz), Temperature (°C, °F, K), Area, Volume (liters, gallons, cups), Speed (km/h, mph), and Data (MB, GB, TB). All calculations happen instantly in your browser.
unit converterlength converterweight convertertemperature converterunit conversionmetric to imperialcm to incheskg to lbs
Your privacy is built in
Everything in Unit Converter runs locally in your browser — your data never leaves your device and is never uploaded to a server, so nothing you enter is stored or seen by anyone else. No account, no sign-up, no watermark, and completely free.
Frequently asked questions
What unit categories are supported?
Length, Weight/Mass, Temperature, Area, Volume, Speed, and Data storage units.
How accurate are the conversions?
Conversions use exact scientific conversion factors with up to 10 significant figures of precision.
How do I convert Celsius to Fahrenheit?
Select "Temperature" category, choose Celsius as the From unit and Fahrenheit as To, then enter your value.