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
Steps on How to convert units online: open Unit Converter, pick the quantity type, enter the value, choose from/to units, then copy the result - no account and no upload.
- 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
Common conversions on How to convert units online include km↔mi, kg↔lb, °C↔°F, and ml↔fl oz - pick the matching category first so Unit Converter applies the right factor.
| 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
How the conversions work in How to convert units online: fixed factors and formulas run in the browser for length, mass, temperature, and common derived units so the page stays private.
Privacy
Privacy on How to convert units online means your numbers never leave the page for the local calculator path - clear the field if you share the screen on a call.