How many millimeters are in a centimeter?
There are 10 millimeters in 1 centimeter.
Detailed answer
The metric system uses powers of ten. One centimeter is one hundredth of a meter, and one millimeter is one thousandth of a meter—so one centimeter equals 10 millimeters. Multiply centimeters by 10 to get millimeters; divide millimeters by 10 to get centimeters.
Relationship context
Both units are SI-derived metric lengths. Decimal relationships make mental math and scaling straightforward compared with mixed imperial fractions.
Quick conversion table
| Centimeter (cm) | Millimeter (mm) |
|---|---|
| 0.1 | 1 |
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 50 |
| 6 | 60 |
| 7 | 70 |
| 8 | 80 |
| 9 | 90 |
| Centimeter (cm) | Millimeter (mm) |
|---|---|
| 10 | 100 |
| 20 | 200 |
| 30 | 300 |
| 40 | 400 |
| 50 | 500 |
| 60 | 600 |
| 70 | 700 |
| 80 | 800 |
| 90 | 900 |
| 100 | 1,000 |
More Centimeters converters
Dedicated pages from Centimeter to every other common length unit (meter, kilometer, centimeter, millimeter, inch, feet, mile, yard).