Convert square millimeter [mm^2] to square mile (US survey) Online | Free area Converter
Square Millimeter [mm²]
A square millimeter (mm²) is a unit of area equal to a square with sides 1 millimeter long. It is used to measure very small surfaces, such as parts of mechanical components or electronic circuits.
1 mm² = 0.000001 m².
Square Mile (US Survey)
The square mile (US survey) is a unit of area used in the United States for land measurement based on the US survey foot. It represents a square with sides 1 mile long, where a mile is defined using the survey foot rather than the international foot.
1 US survey mile = 5,280 US survey feet
1 square mile (US survey) ≈ 2.589998 km² (slightly different from the international square mile of 2.59 km²)
This unit is mostly used in land surveying and mapping within the US.