millimeters to centimeters Converter
Type a value in millimeters and get the answer in centimeters instantly — or convert the other way. The conversion uses the exact relationship 1 millimeters = 0.1 centimeters, the same formula used in textbooks and engineering references.
The metric system's two everyday small units differ by exactly one factor of ten: 1 centimeter is 10 millimeters. Divide by 10 to go from mm to cm — or slide the decimal point one place left, which is all this converter is really doing.
How to use
- Type your value into the millimeters box — the centimeters result updates as you type.
- To go the other direction, type into the centimeters box instead and read the millimeters result.
- Copy the result with one tap, or scan the reference table below for common values.
Frequently asked questions
How do you convert millimeters to centimeters?
Multiply the number of millimeters by 0.1. For example, 10 millimeters = 1 centimeters. The converter above does this for you and shows more decimal places than you will ever need.
How many centimeters are in one millimeters?
Exactly 0.1 centimeters. This is a fixed definition, not an approximation, so the conversion is exact at any scale.
Is this converter accurate for professional use?
Yes — it uses full double-precision arithmetic and the official millimeters-to-centimeters factor, so results are reliable for schoolwork, cooking, fitness, travel and technical work.
Can I convert centimeters back to millimeters?
Yes. The converter is two-way: just type in the second box and the first box updates instantly with the reverse conversion.