Acres Calculator

Calculate acres from length and width, square feet, square yards, square meters, hectares, or known land area. Estimate acreage, perimeter, fence length, material coverage, waste, and land project cost.

Calculate Acres

Acres = Square Feet ÷ 43,560. Acres With Extra = Net Acres × (1 + Extra Percentage).
Your result will appear here.

How the acres calculator works

Length and width mode:
The calculator converts your dimensions to feet, calculates square feet, then converts the result into acres.

Multiple areas mode:
The calculator multiplies one area by the number of same-size areas.

Known area mode:
The calculator converts your known area into acres, square feet, square yards, hectares, and square miles.

Circular area mode:
The calculator uses diameter to estimate circular acreage and perimeter.

Why use an acres calculator?

An acres calculator helps estimate land size for lots, fields, farms, pastures, yards, property lines, fence projects, mowing, seeding, fertilizing, spraying, and land planning.

It can help calculate acres, square feet, square yards, square meters, hectares, square miles, perimeter, fence length, material units, labor cost, and estimated total cost.

What your result means

Your result shows net acres, acres with extra, square feet, square yards, square meters, hectares, square miles, perimeter, estimated fence length, material units, material cost, labor cost, fence cost, and estimated total cost.

Acres formulas

Frequently asked questions

How do I calculate acres?

Calculate square feet first, then divide by 43,560. For example, 43,560 square feet equals 1 acre.

How many square feet are in an acre?

One acre equals 43,560 square feet.

How many square yards are in an acre?

One acre equals 4,840 square yards.

How many acres are in a square mile?

One square mile equals 640 acres.

Is this acres calculator exact?

No. It is an estimate. Actual acreage can vary by irregular property lines, slopes, survey boundaries, easements, exclusions, rounding, and measurement method.