# Area (square / circle)

To the mobile version
 Area F = km² (square kilometer) ha (hektare) a (are) m² (square meter) cm² (square centimeter) mm² (square millimeter) b (barn) mi² [int.] (square mile, international) yd² [int.] (square yard, international) ft² [int.] (square foot, international) in² [int.] (square inch, international) mi² [sur.] (square mile, U.S. survey) acre (acre, U.S. survey) rood (rood, U.S. survey) cir. in (circular inch) cir. mil (circular mil) Side length of square a = km (kilometer) m (meter) cm (centimeter) mm (millimeter) nm (nanometer) mi [int.] (mile, international) yd [int.] (yard, international) ft [int.] (foot, international) in [int.] (inch, international) mi [sur.] (mile, U.S. survey) yd [sur.] (yard, U.S. survey) ft [sur.] (foot, U.S. survey) mil Diameter of circle d = km (kilometer) m (meter) cm (centimeter) mm (millimeter) nm (nanometer) mi [int.] (mile, international) yd [int.] (yard, international) ft [int.] (foot, international) in [int.] (inch, international) mi [sur.] (mile, U.S. survey) yd [sur.] (yard, U.S. survey) ft [sur.] (foot, U.S. survey) mil

Rounding: significant digits.
Decimal sign:

With this converter you can calculate the side length of a square or the diameter of a circle from the size of an area. Calculations vice versa are also possible. Input and output are possible in various metric and non-metric units.

Usage: Always choose the correct unit in the corresponding pull-down-menu before you type a value. Type the size of an area, the side length of a square, or the diameter of a circle into the corresponding field. After a mouseclick on any free space of the window or on the "calculate" button you may read the result. By the help of the pull-down menus you can show the results in other units.
For another calculation you just have to type the new value. Or you click on the "reset" button before.

Example: How much is 1 acre (U.S. survey) in SI-units? Choose the unit "acre" in the pull-down menu for area units. Then type the value "1" into the corresponding field. After a mouseclick on any free space of the window or on the "calculate" button the calculation is performed. By choosing "m²" as area unit, you may read that 1 arce corresponds to an area of 4046.9 m². This could be the area of a square with a side length of 63.615 m or of a circle with a diameter of 71.782 m.

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