## Millimeter

What is millimeter?

The millimeter is a unit of length in the metric system. A millimeter is a tiny unit of measurement. The thickness of a dime is a little more than a millimeter, and there are a thousand millimeters in a meter.

If you want to understand millimeter more, look at a ruler that includes centimeters. The units of metric measurement that are closest in length to inches. The smallest units marked on the ruler are millimeters — there are ten of them in each centimeter.

A common shortening of millimetre in spoken English is “mil”. This can cause confusion since in the United States, “mil” traditionally means a thousandth of an inch.

Use the following table to convert millimeter into other length units:

 kilometer (km) 0.000001 meter (m) 0.001 decimeter (dm) 0.01 centimeter (cm) 0.1 micrometre (micron) 1,000 nanometer (nm) 1,000,000 ångström 10,000,000 yard (yd) 0.001094 foot (ft) 0.003281 span 0.004374 hand 0.009843 inch (in) 0.03937 line 0.4724 mil 39.37 microinch 39,370