Convert mm to m

Millimeter

What Is a Millimeter?
A millimeter (mm) is an SI-derived length unit equal to one-thousandth of a meter. In modern terms, it represents the distance light travels in 1/299 792 458 000 of a second, inheriting the meter’s precision.

Where It Comes From
The prefix milli- comes from the Latin mille (“thousand”), marking a factor of 10⁻³. Though the meter itself has shifted—from a platinum bar to krypton emissions to a light-speed standard—the millimeter remains exactly 0.001 m.

How It’s Used Today
Millimeters are essential when you need fine detail: engineering blueprints, machine tolerances, electronic component specs, and any scenario where centimeters are too coarse.

Meter

What Is a Meter?
A meter (m) is the SI’s fundamental unit of length, defined by the distance light travels in a vacuum in 1/299 792 458 of a second. This definition, updated in 2019 alongside the second, guarantees unwavering global consistency.

Where It Comes From

• 1793: One ten-millionth of the Earth’s meridian from the Equator to the North Pole

• 1889: A platinum-iridium prototype bar at 0 °C

• 1960: A fixed number of krypton-86 wavelengths

• 1983–2019: Anchored to the speed of light

How It’s Used Today
Meters dominate international standards—engineering, construction, scientific research, and everyday distance markings. While some countries still favor feet or miles in daily life, meters underpin all official and technical measurements.

Millimeter → Meter Conversion Table

Hur man konverterar

• 1 mm = 0.001 m

• 1 m = 1000 mm

Exempel

Convert 15 mm to meters:

15 mm × 0.001 m/mm = 0.015 m