Convert cm to mm
1 cm = 10 mm
1 mm = 0.1 cm
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How to convert cm to mm
Multiply the value in cm by 10 to get mm. As a formula: mm = cm × 10
Good to know
One centimetre is 10 millimetres. On a metric ruler the numbered long lines are centimetres and the small marks between them are millimetres.
cm to mm conversion table
| cm (cm) | mm (mm) |
|---|---|
| 0.5 cm | 5 mm |
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 2.5 cm | 25 mm |
| 3 cm | 30 mm |
| 4 cm | 40 mm |
| 5 cm | 50 mm |
| 6 cm | 60 mm |
| 8 cm | 80 mm |
| 10 cm | 100 mm |
| 12 cm | 120 mm |
| 15 cm | 150 mm |
| 20 cm | 200 mm |
| 25 cm | 250 mm |
| 30 cm | 300 mm |
| 50 cm | 500 mm |
| 75 cm | 750 mm |
| 100 cm | 1,000 mm |
| 250 cm | 2,500 mm |
| 500 cm | 5,000 mm |
| 1,000 cm | 10,000 mm |
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Need other units? The full Length Converter converts between every unit it supports, and the Unit Converters page lists the rest.
cm to mm — questions
How many mm are in 1 cm?
1 cm = 10 mm. Multiply the value in cm by 10 to get mm.
How do I convert cm to mm?
Multiply the value in cm by 10. For example, 0.5 cm × 10 = 5 mm.
What is 0.5 cm in mm?
0.5 cm = 5 mm.
What is 2.5 cm in mm?
2.5 cm = 25 mm.
What is 10 cm in mm?
10 cm = 100 mm.