Millimetres to centimetres converter
Centimetres (cm)
1 millimetre = 0.1 centimetres
How to convert millimetres to centimetres
cm = mm × 0.1
Multiply the number of millimetres by 0.1 to get centimetres. Going the other way, divide by 0.1 (or multiply by 10).
One millimetre is exactly defined as 0.1 centimetres (to 12 significant figures), and one centimetre is 10 millimetres.
Worked examples
- Convert 5 millimetres: 5 × 0.1 = 0.5 0.5 centimetres.
- Convert 12.5 millimetres: 12.5 × 0.1 = 1.25 1.25 centimetres.
- Convert 250 millimetres: 250 × 0.1 = 25 25 centimetres.
Quick-reference table
| mm | cm |
|---|---|
| 1 | 0.1 |
| 2 | 0.2 |
| 3 | 0.3 |
| 5 | 0.5 |
| 10 | 1 |
| 15 | 1.5 |
| 20 | 2 |
| 25 | 2.5 |
| 50 | 5 |
| 75 | 7.5 |
| 100 | 10 |
| 1,000 | 100 |
| cm | mm |
|---|---|
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 5 | 50 |
| 10 | 100 |
| 15 | 150 |
| 20 | 200 |
| 25 | 250 |
| 50 | 500 |
| 75 | 750 |
| 100 | 1,000 |
| 1,000 | 10,000 |
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Frequently asked questions
How many centimetres are in 1 millimetre?
1 millimetre equals 0.1 centimetres.
What is the formula to convert millimetres to centimetres?
Use cm = mm × 0.1. Multiply the number of millimetres by 0.1 to get centimetres. Going the other way, divide by 0.1 (or multiply by 10).
What is 100 millimetres in centimetres?
100 millimetres is 10 centimetres.