Convert millimeters to meters
Converting millimeters to meters is a common length task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 mm equals 0.001 m, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert millimeters to meters
To convert millimeters to meters, multiply the number of millimeters by 0.001. For example, 10 mm × 0.001 = 0.01 m.
m = mm × 0.001
- Write down the value in millimeters you want to convert.
- Multiply it by 0.001 (the exact mm→m factor).
- The result is your value in meters. Check it below with the converter or the table.
Conversion table
Common values of millimeters and their equivalents in meters:
| mm | m |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
About these units
Millimeter (mm). A millimeter is one thousandth of a meter, the smallest length unit in everyday metric use. It is the standard precision unit in engineering drawings, machining and rainfall measurement.
Meter (m). The meter is the SI base unit of length, defined since 1983 as the distance light travels in a vacuum in 1/299,792,458 of a second. It is the foundation of the metric system worldwide.
Frequently asked questions
How do I convert millimeters to meters?
To convert millimeters to meters, multiply the number of millimeters by 0.001. For example, 10 mm × 0.001 = 0.01 m. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many meters are in 1 millimeter?
1 mm = 0.001 m. That is the fixed relationship used by this converter and by international standards.
How many millimeters are in 1 meter?
1 m = 1,000 mm. If you are converting in the opposite direction, use our Meter to Millimeter converter for the dedicated table and FAQ.
Is the millimeters to meters conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.001 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is millimeter used for?
A millimeter is one thousandth of a meter, the smallest length unit in everyday metric use. It is the standard precision unit in engineering drawings, machining and rainfall measurement.