To determine acreage, it is necessary to have the square measurements of an area of land. One acre of land equals 43,560 square feet. If "F" equals the number of square feet and "A" the acreage, then the formula to determine acreage is A=F/43,560.

Similar formulas are used to calculate acreage from square yards and square meters. One acre is equal to 4,840 square yards and 4,047 square meters. If "Y" equals the number of square yards and "M" equals the number of square meters, then the related formulas for calculating acreage are A=Y/4840 and A=M/4047, respectively. To calculate square feet, yards or meters for use in these equations, multiply the area's length by the width.