Here’s a quick reference table for you.

1 acre is equal to:
Measurements in various units of area measurement equalling 1 acre.
Unit of Measure Amount Equaling 1 Acre
Hectares .4047 hectares
Meters 4047 m²
Miles 0.0015625 miles² (640 acres = 1 mile²)
Yards 4,840 yds²
Square Feet 43,560 ft²
Square Inches 6,272,640 in²
Perches 160 perches (1 perch = 1 rod)
Rods 160 rod² (1 rod = 16 ½ feet)
How to Calculate Acres

The easiest way to calculate the number of acres in your land is to use the calculator above. If you know the length and width, simply enter them. The calculator will provide the number of acres, as well as the area in other units. It will also give you perimeter. If you already know the acres but want the area in other units, use our acreage unit conversion tool.

To calculate acres by hand, multiply your length and width (in feet) to get square feet. Try our length conversion tools, if needed. Then divide by 43,560 to determine the size of the land in acres. You can quickly find the square footage of an area using our square feet area calculator.

Often, property is not divided into perfect squares and finding the acreage of irregular shapes can be a little more challenging. If the land can be broken down into smaller geometric shapes, you can find the square footage of those smaller shapes separately and then them add together. Alternatively, use the interactive map above to determine the actual area.

Example: Your city house lot is 33’ wide by 102’ long. How many acres do you have?

33’ x 102’ = 3,366 sq.ft.
3,366 / 43,560 = 0.077 acres

Acreage Calculator

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