Millimeters to Centimeters Converter
Convert Millimeters to Centimeters (mm to cm) instantly. Type a value and the result updates as you go, accurate to the full international standard.
Millimeters to Centimeters: the formula
One millimeter equals exactly 0.1 centimeters. So to convert any length from Millimeters to Centimeters, you multiply by 0.1:
Worked example
Convert 10 mm to Centimeters: 10 × 0.1 = 1 cm.
Quick conversion table
| Millimeters | Centimeters |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 25 mm | 2.5 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
How to use this converter
Type your measurement into the Millimeters box and read the Centimeters result instantly. You can also type into the Centimeters box to convert in the reverse direction. Results update live as you type, no button needed.
Frequently asked questions
How do you convert Millimeters to Centimeters?
Multiply the millimeter value by 0.1. Because 1 millimeter equals exactly 0.1 centimeters, the formula is: cm = mm × 0.1.
How many Centimeters are in one millimeter?
One millimeter equals 0.1 centimeters. Conversely, one centimeter equals 10 millimeters.
Is this mm to cm conversion exact?
Yes. It uses the internationally agreed definitions (1 inch = 0.0254 m exactly, 1 mile = 1609.344 m, etc.), so results are accurate to the full precision shown.
Can I convert Centimeters back to Millimeters?
Yes, to go the other way, multiply the centimeter value by 10 (or divide by 0.1).
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