Meters To Millimeters Conversion (m To Mm) - Inch Calculator

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• Meters to Millimeters Converter
• How to Convert Meters to Millimeters
• How Many Millimeters Are in a Meter?
• What Is a Meter?
• What Is a Millimeter?
• Meter to Millimeter Conversion Table
• References

Person Icon By Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Sexton, J. (n.d.). Meters to Millimeters Converter. Inch Calculator. Retrieved December 18, 2025, from https://www.inchcalculator.com/convert/meter-to-millimeter/

How to Convert Meters to Millimeters

To convert a measurement in meters to a measurement in millimeters, multiply the length by the following conversion ratio: 1,000 millimeters/meter.

Since one meter is equal to 1,000 millimeters, you can use this simple formula to convert:

millimeters = meters × 1,000

The length in millimeters is equal to the length in meters multiplied by 1,000.

For example, here's how to convert 5 meters to millimeters using the formula above.

millimeters = (5 m × 1,000) = 5,000 mm

How Many Millimeters Are in a Meter?

There are 1,000 millimeters in a meter, which is why we use this value in the formula above.

1 m = 1,000 mm

Our inch fraction calculator can add meters and millimeters together, and it also automatically converts the results to US customary, imperial, and SI metric values.

Meters and millimeters are both units used to measure length. Keep reading to learn more about each unit of measure.

What Is a Meter?

According to the most recent 2019 definition, the meter is defined as the distance traveled by light in vacuum during a time interval with a duration of 1/299,792,458 of a second.[1] One meter is equal to 100 centimeters, 3.28084 feet, or 39.37 inches.

The meter, or metre, is the SI base unit for length in the metric system. Meters can be abbreviated as m; for example, 1 meter can be written as 1 m.

Learn more about meters.

What Is a Millimeter?

One millimeter is equal to one-thousandth (1/1,000) of a meter, which is defined as the distance light travels in a vacuum in 1/299,792,458 of a second. One millimeter is equal to 0.0393701 inches.

The millimeter, or millimetre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "milli" is the prefix for thousandths, or 10-3. Millimeters can be abbreviated as mm; for example, 1 millimeter can be written as 1 mm.

Millimeters are often represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a US dime is 1.35mm.[2]

Learn more about millimeters.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or a combination of both values, so make sure you get the correct type for your needs.

Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements.

Meter to Millimeter Conversion Table

Table showing various meter measurements converted to millimeters.

Meters	Millimeters
0.001 m	1 mm
0.002 m	2 mm
0.003 m	3 mm
0.004 m	4 mm
0.005 m	5 mm
0.006 m	6 mm
0.007 m	7 mm
0.008 m	8 mm
0.009 m	9 mm
0.01 m	10 mm
0.02 m	20 mm
0.03 m	30 mm
0.04 m	40 mm
0.05 m	50 mm
0.06 m	60 mm
0.07 m	70 mm
0.08 m	80 mm
0.09 m	90 mm
0.1 m	100 mm
0.2 m	200 mm
0.3 m	300 mm
0.4 m	400 mm
0.5 m	500 mm
0.6 m	600 mm
0.7 m	700 mm
0.8 m	800 mm
0.9 m	900 mm
1 m	1,000 mm

References

1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf
2. United States Mint, Coin Specifications, https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications

More Meter & Millimeter Conversions

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Ruler IconConvert to Millimeters

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