Convert Millimeters to Meters
mm to m · length conversion
What are millimeters and meters?
A millimeter is one-thousandth of a meter, about the thickness of a credit card. The meter is the SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second. For scale: a doorway is about 2 m (6.6 ft) tall, and a marathon is 42.2 km (26.2 mi).
How to convert millimeters to meters
1 mm = 0.001 m. To convert, multiply the number of millimeters by 0.001. For example, 5 mm = 0.005 m, and 20 mm = 0.02 m. To go the other way, multiply meters by 1,000 (since 1 m = 1,000 mm).
Millimeters to Meters conversion table
| Millimeters (mm) | Meters (m) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
FAQ
What is 1 mm in m?
1 mm = 0.001 m. To convert any amount, multiply the number of millimeters by 0.001.
How do I convert meters back to millimeters?
Go the other way: 1 m = 1,000 mm, so multiply meters by 1,000 to get millimeters.
Is a millimeter bigger than a meter?
No — 1 mm is the smaller unit, equal to 0.001 m (it takes 1,000 mm to make one m).
Are these length conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.