# Square mil conversions

The square mil conversion selector on this page selects the area/surface measurement unit to convert to starting from square mils (sq mil). To make a conversion starting from a unit of area other than square mil, simply click on the "Reset" button.

## About square mil

The **square mil** is a unit of area in the Imperial and US customary systems of units equal to 6.4516 × 10^{-10} square meters (1 square mil = 6.4516 × 10^{-10} m^{2}), the standard derived unit of area in the International System of Units (SI).

The square mil (sq mil) is also equal to 6.4516 × 10^{-6} square centimeters (cm^{2}), or 6.4516 × 10^{-4} square millimeters (mm^{2}), or 645.16 square micrometers (μm^{2}) or 6.4516 × 10^{8} square nanometers (nm^{2}) (units of area in the SI), or about 1.273 circular mils (cmil), or 10^{-6} square inches (sq in) or 6.94444444 × 10^{-9} square feet (sq ft), which are Imperial / US customary units of area.

The square mil (sq mil) is an Imperial / US customary unit of area. The mil is a unit of length in the Imperial and US customary systems of units. An area of 1.0 square mil is the area of a square that is 1.0 mil on each side.

The conversion formula between square mils and circular mils:

Square Mils = π/4 × Circular Mils

Symbol: sq mil

Plural: square mils

Square mil conversions: a compehensive list with conversions from square mils to other (metric, imperial, or customary) area and surface measurement units is shown below.

- square mil to acre (sq mil to ac)
- square mil to acre (US survey) (sq mil to ac)
- square mil to are (sq mil to a)
- square mil to carreau
- square mil to centiare (sq mil to ca)
- square mil to circular inch (sq mil to circ in)
- square mil to circular mil (sq mil to cmil)
- square mil to decare (sq mil to daa)
- square mil to dunam
- square mil to hectare (sq mil to ha)
- square mil to mu
- square mil to ping
- square mil to pyong
- square mil to rood (sq mil to ro)
- square mil to section
- square mil to square centimeter (sq mil to sq cm)
- square mil to square chain (sq mil to sq ch)
- square mil to square decameter (sq mil to sq dam)
- square mil to square decimeter (sq mil to sq dm)
- square mil to square foot (sq mil to sq ft)
- square mil to square hectometer (sq mil to sq hm)
- square mil to square inch (sq mil to sq in)
- square mil to square kilometer (sq mil to sq km)
- square mil to square meter (sq mil to sq m)
- square mil to square micrometer (sq mil to sq μm)
- square mil to square mile (sq mil to sq mi)
- square mil to square millimeter (sq mil to sq mm)
- square mil to square nanometer (sq mil to sq nm)
- square mil to square yard (sq mil to sq yd)
- square mil to stremma