What is the Acreage Calculator?
Acreage measures land area. This calculator finds the acres in a rectangular plot from its length and width, and also shows hectares and square feet.
How to use the Acreage tool
- Enter Length, Width and Unit.
- The result updates instantly as you type, or press Calculate.
- Use Try an example to see how it works, and Reset to start again.
Formula
Acres = length × width in square feet ÷ 43,560.
Worked example
A plot of 200 by 150 feet is 30,000 square feet, which is 0.6887 acres or 0.2787 hectares.
Frequently asked questions
How many square feet are in an acre?
43,560.
How do I measure an irregular plot?
Split it into rectangles, find each area and add them together.
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Checked by Calcovate · Formula tested against worked examples · Updated 7 Nov 2026 · How we check our calculators.