1 cm to mm
1 cm = 10 mm
1 centimeter equals 10 millimeters.
How to convert 1 cm to mm
Use the formula mm = cm × 10:
mm = 1 × 10mm = 10
So 1 cm = 10 mm.
Rounded values and quick estimate
- Rounded to a whole number: 10 mm
- Rounded to one decimal place: 10 mm
- Conversion factor: 1 centimeter = 10 millimeters
This conversion is exact, so there is no need to estimate: just multiply by 10.
1 cm in other units
- Millimeters
- 10 mm
- Meters
- 0.01 m
- Kilometers
- 0.00001 km
- Inches
- 0.3937 in
- Feet
- 0.0328 ft
- Yards
- 0.0109 yd
- Miles
- 0.000006 mi
- Micrometers
- 10000 µm
- Hands
- 0.0984 hh
- Nautical miles
- 0.000005 nmi
- Mils (thou)
- 393.7 mil
1 cm and nearby values
About centimeters and millimeters
A centimeter is one hundredth of a meter. It is the everyday metric unit for body height, clothing and short lengths.
A millimeter is one thousandth of a meter (0.1 cm). It is used for small, precise measurements like rainfall, screws and paper thickness.
Related conversions
Frequently asked questions
What is 1 cm in mm?
1 centimeter is 10 millimeters (1 cm = 10 mm).
How do you convert 1 cm to mm?
Apply mm = cm × 10: mm = 1 × 10, mm = 10.
How many centimeters is 10 mm?
10 mm is about 1 centimeter.