The millimeter conversion selector on this page selects the length/distance measurement unit to convert to starting from millimeters (mm). To make a conversion starting from a unit of length other than millimeter, simply click on the "Reset" button.
The millimeter is a unit of length in the metric system equal to one thousandth of a meter (1 mm = 10-3 m), the base unit of length in the International System of Units (SI).
One millimeter (mm) is also equal to 0.1 centimeters (cm), or 1,000 micrometers (μm) or 1,000 × 103 nanometers (nm) (SI units of length), or approximately 3.2808 × 10-3 feet (ft) or 39.37 × 10-3 inches (in), which are US customary / Imperial units of length.
The millimeter is commonly used for many everyday length measurements.
Also known as: millimetre (plural: millimetres, Int. spelling)