About millimetres and centimetres
A millimetre (mm) is one thousandth of a metre. It is used for small measurements in engineering, manufacturing and rainfall.
A centimetre (cm) is one hundredth of a metre. It is the everyday unit for body height, clothing sizes and small objects.
How the conversion works
Converts millimetres to centimetres, and back again. Type a value in either box and the other one updates as you type. The conversion uses 1 millimetre = 0.1 centimetres.
Millimetre to Centimetre conversion table
| millimetres | centimetres |
|---|---|
| 1 millimetre | 0.1 centimetres |
| 2 millimetres | 0.2 centimetres |
| 5 millimetres | 0.5 centimetres |
| 10 millimetres | 1 centimetre |
| 25 millimetres | 2.5 centimetres |
| 50 millimetres | 5 centimetres |
| 100 millimetres | 10 centimetres |
| 1,000 millimetres | 100 centimetres |
How to use it
- Enter a value in millimetres to see it in centimetres, or type in the other box to convert the opposite way.
- Check the quick conversion table below for common values.
- To convert by hand, multiply the number of millimetres by 0.1.
Did you know?
- A standard bank card is 0.76 millimetres thick.
- A centimetre is about the width of a fingernail.