Area - a quantity that describes the total amount of space a 2 dimensional shape covers. The units used to describe an area are based on the length of a side of a square, the standard SI unit for area is the square meter.
acre, are (a), barn (b), hectare (ha), homestead, rood, square centimeter (cm²), square foot (ft²), square inch (in²), square kilometer (km²), square meter (m²), square mile, square millimeter (mm²), square rod, square yard (yd²), township (twp)
About Area Unit Conversion tool.
This Unit Conversion program uses custom rounding routines to avoid results such as 3.9999999999 instead of 4. It rounds the result to 13 significant digits instead of rounding to some number of decimal places, therefore producing superior results for very big or very small initial values and conversion factors. It accepts scientific notation and converts immediately.