About the Acre Calculator
Convert a plot to acres and work out the dimensions of an acre in any shape.
Also known as: how big is an acre, acres from dimensions, acre to square feet, acreage.
How to use this calculator
- Enter calculate and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
1 acre = 43,560 ft² = 4,046.86 m²
Worked example
Using the values pre-filled in the calculator above:
- Calculate: Acres from dimensions
- Length = 200 ft
- Width = 218 ft
the calculator returns:
- Acres: 1.00092
- Square feet: 43,600
- Square metres: 4,050.57
- Hectares: 0.40506