# Square millimeter conversions

area conversions » square millimeter conversionsThe online converter calculator on this page allows you to select the area/surface measurement unit you want to convert to starting from square millimeters (sq mm). To make a conversion starting from a unit of area other than square millimeter, simply click on the "Reset" button.

## What is square millimeter?

### Definition:

The square millimetre is a unit of area in the metric system equal to 10-6 square meters (1 mm2 = 10-6 m2), the standard derived unit of area in the International System of Units (SI). It is also equal to 0.01 square centimeters (cm2), or 106 square micrometers (μm2) or 1012 square nanometers (nm2) (units of area in the SI), or 0.0015500031 square inches (sq in) or 1.07639104x10-5 square feet (sq ft), which are Imperial / US customary units of area.

The square millimeter (mm2) is an SI derived unit of area. The millimeter (mm) is a unit of length in the SI. An area of 1.0 square millimeter is the area of a square that is 1.0 millimeter on each side.

### Symbol:

sq mm

### Plural:

square millimeters

### Also known as:

square millimeter (plural: square millimeters, US spelling)

Below you can find a comprehensive list with conversions from square millimeters to other (metric, imperial, or customary) area and surface measurement units.