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Convert mm to m, m to mm - Length Conversion

Use these online calculators to convert between millimeters (mm) and meters (m). These Length conversion calculators provide a quick and easy way to convert:

  • mm to m
  • m to mm

Conversion Calculators

Enter your value in one of the conversion calculators below to convert mm to m or convert m to mm.

Convert mm to m

Convert m to mm

How to convert mm to m: Use the conversion calculator on the left titled "Convert mm to m". Enter a value in the mm field and click on the "Calculate m" button. Your answer will appear in the m field.

How to convert m to mm: Use the conversion calculator on the right titled "Convert m to mm". Enter a value in the m field and click on the "Calculate mm" button. Your answer will appear in the mm field.

Conversion Definitions

The following is a list of definitions relating to conversions between millimeters and meters.

What is a millimeter (mm)?

A millimeter is a unit of length in the Metric System. The symbol for millimeter is mm. There are 1,000 millimeters in a meter. The International spelling is millimetre.

What is a meter (m)?

A meter is a unit of length in the Metric System. The symbol for meter is m. There are 1,000 meters in a kilometer. The International spelling is metre.

How many millimeters in a meter?

There are 1,000 millimeters in a meter.

How many meters in a millimeter?

There are 0.001 meters in a millimeter.

Understanding the Length Units

This table provides a summary of the Length units within their respective measurement systems.

Unit Symbol Measurement System Description
inches in or " US Customary Units (and Imperial)  
feet ft or ' US Customary Units (and Imperial) 1 foot = 12 inches
yards yd US Customary Units (and Imperial) 1 yard = 3 feet
miles mi US Customary Units (and Imperial) 1 mile = 1760 yards or 5280 feet
millimeter mm Metric System 1000 mm = 1 m
centimeter cm Metric System 100 cm = 1 m, 1 cm = 10 mm
decimeter dm Metric System 10 dm = 1 m, 1 dm = 10 cm
meter m Metric System 1 m = 1000 mm, 100 cm, 10 dm
kilometer km Metric System 1 km = 1000 m