Acreage calculator

Convert a rectangular plot’s dimensions in feet to acres: acres = length × width ÷ 43,560.

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Length (feet)

Width (feet)

Answer

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Convert a rectangular plot’s dimensions in feet to acres: acres = length × width ÷ 43,560.

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Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

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Formula and assumptions

One acre is 43,560 square feet. This assumes a flat rectangle and does not replace a property survey, curved boundary calculation or sloped-surface measurement.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Acreage calculator

Convert a rectangular plot’s dimensions in feet to acres: acres = length × width ÷ 43,560.

One acre is 43,560 square feet. This assumes a flat rectangle and does not replace a property survey, curved boundary calculation or sloped-surface measurement.

Next: Area calculator

A worked example

Example inputs: length (feet) = 660, width (feet) = 66. Area (acres) = 1.

Before you use the result

One acre is 43,560 square feet. This assumes a flat rectangle and does not replace a property survey, curved boundary calculation or sloped-surface measurement.

Example results for length (feet)

These examples use Width (feet): 66. They are reference calculations, not recommended settings.

Length (feet)	Area (acres)
330	0.5
660	1
1320	2

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