Centimeters to Millimeters (cm to mm)
Free online centimeter to millimeter converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
LENGTH CONVERTER — INSTANT RESULT
Formula: multiply the centimeter value by 10 — i.e. mm = cm × 10
Quick check: 1 cm = 10 mm
Quick check: 1 cm = 10 mm
Centimeters to Millimeters conversion table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 cm | 10 mm |
| 2 cm | 20 mm |
| 3 cm | 30 mm |
| 4 cm | 40 mm |
| 5 cm | 50 mm |
| 6 cm | 60 mm |
| 7 cm | 70 mm |
| 8 cm | 80 mm |
| 9 cm | 90 mm |
| 10 cm | 100 mm |
| 15 cm | 150 mm |
| 20 cm | 200 mm |
| 25 cm | 250 mm |
| 30 cm | 300 mm |
| 40 cm | 400 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 |
How to convert centimeters to millimeters
To convert centimeters to millimeters, multiply the amount in centimeters by 10. For example, 10 cm = 100 mm. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between metric and imperial/US customary length units, plus nautical, astronomical and survey units. The meter is the SI base unit of length; all factors below are exact definitions where a legal definition exists.
Frequently asked questions
How many millimeters are in one centimeter?
One centimeter is exactly 10 millimeters.
How do I convert cm to mm?
Multiply the cm value by 10 to get mm. The converter at the top of this page does this automatically and works in both directions.
How much is 100 centimeters in millimeters?
100 centimeters equals 1,000 millimeters.