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Millimeters to Meters Converter

Convert millimeters to meters with the formula, a reference table and every length unit.

Online Converter

Convert Millimeter to Meter

0.001

Conversion Formula

m = mm × 0.001

1 mm in every length unit

Tap a unit to make it the target of the converter above.

Conversion factors

1 mm = 0.001 m
1 m = 1,000 mm
m = mm × 0.001

Using this converter

How to use
  1. 1

    Enter a value

    Type a number into the From box. It starts at 1 so you can see the basic ratio straight away. Thousands separators such as 1,250.5 are accepted.

  2. 2

    Choose your units

    This page opens with its own units selected. Use either dropdown to pick any other unit in the category, or tap a unit in the all-units list to make it the target.

  3. 3

    Read the result

    The answer updates as you type and the matching formula is shown underneath. There is no Convert button to press.

  4. 4

    Swap, copy or clear

    Swap reverses the direction, Copy Result copies a line such as 1 km = 0.621371 mi, and Clear empties the input so you can start again.

Supported input formats

Input

  • Supported
    Whole numbers25
  • Supported
    Decimal numbers2.75

    Use a dot as the decimal separator.

  • Supported
    Negative numbers-40

    Calculated for every unit. Quantities such as length or weight are normally positive, while temperatures can be negative.

  • Supported
    Thousands separators1,250.5

    Commas must group digits in threes. 1,234 is read as one thousand two hundred thirty-four.

  • Supported
    Scientific notation1.5e6

    Useful for very large or very small values (1.5e6 = 1,500,000).

  • Not supported
    Comma as decimal mark2,5

    Type 2.5 instead.

  • Not supported
    Fractions1/2

    Type 0.5 instead.

  • Not supported
    Numbers with unit text5 km

    Enter only the number and choose the unit from the dropdown.

Output

Results use US English formatting (1,234.56) and show up to 6 decimal places with trailing zeros removed. Very small results appear in scientific notation, such as 9.0949e-13, instead of rounding to zero.

Units available in this converter

  • Meter (m)
  • Kilometer (km)
  • Centimeter (cm)
  • Millimeter (mm)
  • Mile (mi)
  • Yard (yd)
  • Foot (ft)
  • Inch (in)

Quick reference tables

Common values for the units currently selected above, in both directions.

Millimeter to Meter
mmm
10.001
50.005
100.01
250.025
500.05
1000.1
5000.5
1,0001
Meter to Millimeter
mmm
11,000
55,000
1010,000
2525,000
5050,000
100100,000
500500,000
1,0001,000,000

Limitations

  • Uses the international definitions (1 inch = 25.4 mm exactly, 1 mile = 1,609.344 m). The older US survey foot is not used.
  • Nautical miles, light-years and similar units are not available.
  • Results show up to 6 decimal places. Values are not rounded during calculation, and a non-zero result that would display as 0 is shown in scientific notation.
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