# How Many mm in a cm?

Millimeter (mm) and centimeter(cm) are used to measure length.

## Answer: There are 10 mm in 1 cm.

**Explanation:**

Both cm and mm are prefixes used in the metric system.

The base unit to measure length in the SI system is meters.

1 meter equals 100 cm and 1000 mm.

### Thus, 1 cm is equal to 10 mm.

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