How to Convert Units Online - Free, No Sign-Up
A unit converter changes a value from one unit to another - meters to feet, Celsius to Fahrenheit, kilobytes to megabytes, and more. Pick a category, choose the from and to units, and type a number; the result updates as you type. Everything runs in your browser, with no upload and no account.
Last reviewed: 2026-06-15
| Property | Value |
|---|---|
| Format | Online, no install, no sign-up |
| Cost | Free |
| Implementing tool | https://freetoolonline.com/utility-tools/unit-converter.html |
Steps
- Pick a category - length, weight, temperature, and seven more.
- Choose the unit to convert from and the unit to convert to.
- Type a number in the value box; the result updates as you type.
- Use the Swap button to reverse the from and to units.
Common conversions
| From | Equals |
|---|---|
| 1 meter | 3.28084 feet |
| 1 kilometer | 0.621371 miles |
| 1 kilogram | 2.20462 pounds |
| 100 Celsius | 212 Fahrenheit |
| 1 gigabyte | 8 gigabits |
How the conversions work
Most categories use standard conversion factors: the value is converted to the category's base unit and then to the unit you picked. Temperature is different because it is not a simple ratio, so Celsius, Fahrenheit, and Kelvin use offset formulas, which the tool shows on screen. Your recent conversions are kept in this browser so you can glance back at them, and you can clear them any time.
Privacy
Everything runs in your browser. Nothing is uploaded, there is no account to create, and your numbers never leave the page.