Area conversion: unit selection

The conversion calculator converts to and from acres, hectares, square centimeters, square feet, square inches, square kilometers, square meters, square miles, square millimeters, square yards as well as other less commonly used units (see below). Select what you want to convert from and what you want to convert to. Then press the "Conversion calculator" button.

Area conversion calculator

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Area expresses the size of part of a surface, for example the size of a piece of land or of a room.
Units of area supported by the converter:

UnitSymbolDescription
acreacThe acre is a unit of measure for surface typically used to express the size of land.
acre (survey)acThe US Survey acre is the standard acre in the United States and its very slightly different from the international acre.
centiarecaThe centiare is used some countries and is equal to 1 square meter.
hectarehaThe hectare is equal to 1 square hectometer. It's mostly used to measure land.
square astronomical unitau²This unit of measure is not used. It's made available for completeness.
square attometeram²Unit of measure from the metric system used to specify area. One square attometer is equal to 1E-036 square meters.
square cablecable²Unused
square centimetercm²Unit of measure from the metric system used to specify area. One square centimeter is equal to 0.0001 square meters.
square chainch²Unused
square decameterdam²Unit of measure from the metric system used to specify area. One square decameter is equal to 100 square meters.
square decimeterdm²Unit of measure from the metric system used to specify area. One square decimeter is equal to 0.01 square meters.
square fathomfathom²Unused
square femtometerfm²Unit of measure from the metric system used to specify area. One square femtometer is equal to 1E-030 square meters.
square footft²One square foot is equal to 144 square inches.
square foot (survey)ft²One square foot (survey) is equal to 144 square inches (survey).
square furlongfur²Unused
square handhh²Unused
square hectometerhm²Unit of measure from the metric system used to specify area. One square hectometer is equal to 10000 square meters,
square inchin²One square international inch is equal to 6.4516 square centimeters.
square kilometerkm²Unit of measure from the metric system used to specify area. One square kilometer is equal to 1000000 square meters,
square league (land)leagues²Unused
square league (sea)leagues²Unused
square li (Chinese)li²Unused
square light-yearly²Unused.
square linkli²Unused
square meterMetric system unit to specify area.
square micrometerum²Unit of measure from the metric system used to specify area. One square micrometer is equal to 0.000000000001 square meters.
square milmil²The square mil is usually used to measure the section of wires.
square milemi²One square mile is equal to 640 acres.
square mile (survey)mi²One square survey mile is equal to 640 survey acres.
square millimetermm²Unit of measure from the metric system used to specify area. One square millimeter is equal to 0.000001 square meters.
square nanometernm²Unit of measure from the metric system used to specify area. One square nanometer is equal to 1E-018 square meters.
square nautical milenmi²Unused.
square picometerpm²Unit of measure from the metric system used to specify area. One square picometer is equal to 1E-024 square meters.
square rodrd²Unused
square thouthou²Unused
square yardyd²One square yard is equal to 9 square feet.

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