Free Online Unit Converters
Convert length, weight, temperature, volume, speed, data and dozens more units instantly. Accurate results, clear formulas and handy conversion charts — no sign-up, completely free.
Length
18 units
Weight
13 units
Temperature
5 units
Area
11 units
Volume
15 units
Speed
6 units
Time
11 units
Pressure
8 units
Energy
9 units
Power
5 units
Force
4 units
Data Storage
11 units
Data Transfer Rate
5 units
Angle
6 units
Frequency
5 units
Fuel Economy
4 units
Calculators & Code Tools
Color
Text & Code
Sizes
About ConvertAnything
ConvertAnything is a free collection of unit converters and everyday calculators. Every conversion runs instantly in your browser — type a value and the result updates live, with no sign-up and no waiting on a server. We cover metric and imperial units across length, weight, temperature, volume, speed, data, energy and more, plus practical tools for money, color, text and code.
Accurate by design
Each converter is built from exact, internationally agreed conversion factors — an inch is exactly 2.54 centimeters, a pound is exactly 0.45359237 kilograms — so the numbers you get match the definitions used in science and trade. Every conversion page also shows the formula we use, a worked example and a reference chart of the values people look up most, so you can check the math yourself instead of trusting a black box.
Private and free
The converters and the file tools run entirely on your device. When you convert an image, PDF or archive, the file never leaves your browser — nothing is uploaded, stored or logged. There is no account to create and nothing to install. The site is supported by unobtrusive advertising so the tools can stay free for everyone.