About millimetres and metres
A millimetre (mm) is one thousandth of a metre. It is used for small measurements in engineering, manufacturing and rainfall.
The metre (m) is the base unit of length in the metric (SI) system. Almost every other metric length unit is a multiple or a fraction of it.
How the conversion works
Converts millimetres to metres, and back again. Type a value in either box and the other one updates as you type. The conversion uses 1 millimetre = 0.001 metres.
Millimetre to Metre conversion table
| millimetres | metres |
|---|---|
| 1 millimetre | 0.001 metres |
| 2 millimetres | 0.002 metres |
| 5 millimetres | 0.005 metres |
| 10 millimetres | 0.01 metres |
| 25 millimetres | 0.025 metres |
| 50 millimetres | 0.05 metres |
| 100 millimetres | 0.1 metres |
| 1,000 millimetres | 1 metre |
How to use it
- Enter a value in millimetres to see it in metres, 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 0.001.
Did you know?
- A standard bank card is 0.76 millimetres thick.
- Since 1983 the metre has been defined as the distance light travels in a vacuum in 1/299,792,458 of a second.