Unit Converter
Convert length, weight, temperature, volume, area, speed, and data.
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0.001 km
This unit converter covers the measurements people convert most: length, weight, temperature, volume, area, speed, and digital data. Pick a category, choose the units to convert between, and type a value — the result updates instantly with no button to press.
It moves cleanly between metric and imperial systems, so you can turn kilometres into miles, kilograms into pounds, or Celsius into Fahrenheit in a single step. Everything runs in your browser, and nothing you enter is uploaded or stored.
How to use
- Choose a measurement category from the row of buttons at the top.
- Select the unit you are converting from and the unit you are converting to.
- Type the value in the input box; the converted result appears below.
- Switch categories at any time — the unit menus update to match the new category.
FAQ
- Which unit systems are supported?
- Both metric and imperial units are included in each category, so you can convert between, for example, metres and feet, or litres and gallons, without a separate tool.
- Are data sizes based on 1024 or 1000?
- Data storage uses binary multiples, where 1 KB is 1024 bytes, 1 MB is 1024 KB, and so on. This matches how operating systems usually report file and disk sizes.
- Which gallon does the volume converter use?
- Volume uses the US gallon and its related units such as quart, pint, and fluid ounce. One US gallon equals about 3.785 litres.
- How is temperature converted?
- Temperature is not a simple multiplication, so the converter applies the correct formulas between Celsius, Fahrenheit, and Kelvin, including the offsets each scale uses.
- Is my data sent anywhere?
- No. All conversions run in your browser with JavaScript. The values you enter are never transmitted, saved, or shared.