Unit Converter
Convert between length, mass, temperature, volume, speed, area, time and data units — instantly, in your browser.
0.1
1 Millimeter equals
Centimeter (cm)0.1
Meter (m)0.001
Kilometer (km)1.000000e-6
Inch (in)0.03937008
What is the Unit Converter?
The Unit Converter changes a value from one unit to another across everyday categories: length, mass, temperature, volume, speed, area, time and digital data.
Conversions are calculated instantly in your browser as you type, with no ads interrupting the result.
How to use the Unit Converter
- 1Choose a category (for example length or temperature).
- 2Select the unit you are converting from and the unit you want.
- 3Type the value — the converted result updates immediately.
- 4Swap the units at any time to convert in the other direction.
Key features
- Covers length, mass, temperature, volume, speed, area, time and data
- Instant, live conversion as you type
- Swap from/to units in one click
- Works offline once the page has loaded
Important notes
- Temperature uses conversion formulas (not simple ratios), so Celsius, Fahrenheit and Kelvin are handled correctly.
- Digital data uses standard 1 KB = 1024 bytes conventions; results are rounded for display.
Frequently asked questions
Which units are supported?
Common units within length, mass, temperature, volume, speed, area, time and digital storage.
Is the result rounded?
Displayed values are rounded for readability, but the calculation uses full precision internally.
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