Acreage Calculator
Turn a plot's length and width into acres and hectares.
About the Acreage Calculator
Measure the two sides of a rectangular plot in feet, metres, yards or any other unit, and the calculator gives the area in acres, hectares and square feet. It is the quickest way to check a land listing, plan fencing or compare plots quoted in different units.
An acre is 43,560 square feet (exactly 4,046.8564224 m²), historically a furlong by a chain (660 × 66 ft). A hectare is 10,000 m², a square 100 m on each side, about 2.471 acres.
The formula
Acres = length (ft) × width (ft) ÷ 43,560
- length, width
- the two sides of the plot, in the same unit
- 43,560
- square feet in one acre
Worked example
A 200 ft × 150 ft plot
- Area = 200 × 150 = 30,000 ft²
- Acres = 30,000 ÷ 43,560 = 0.6887 acres
- Hectares = 30,000 × 0.09290304 ÷ 10,000 = 0.2787 ha
Things to keep in mind
- Assumes a rectangle. For an L-shaped plot, split it into rectangles and add the areas; for an irregular boundary, use the Map Area Calculator with the corner coordinates.
- Measure along the ground on flat land. On a slope, the area in land records is the horizontal (map) area, which is smaller than the sloping surface.
Questions people ask
How big is an acre?
About 63.6 × 63.6 metres (208.7 ft on each side), or roughly three-quarters of a football pitch.
Hectare to acre?
Multiply hectares by 2.4711. Acres to hectares: multiply by 0.4047.
How many square feet is half an acre?
21,780 ft², for example a plot of 150 × 145.2 ft.