Land Area Converter

How this converter works

Every unit is stored as a number of square feet, and conversions go through that common base. An acre is 43,560 square feet, a hectare is 10,000 square metres or about 2.471 acres, and a square mile is 640 acres. Enter a value, choose the units, and the result updates as you type. The table underneath shows the same quantity in all the other units.

Common values

A worked example

A 5-acre lot is 5 × 43,560 = 217,800 square feet, or about 2.02 hectares. If a fertilizer rate is given per 1,000 square feet and you have a half-acre garden plot (21,780 square feet), you multiply the rate by 21.78.

Common mix-ups

• A square acre is about 208.7 feet on each side. A lot that is 200 feet by 200 feet is only 40,000 square feet, which is about 0.92 acre.
• Rates for seed, lime and fertilizer are often given per 1,000 square feet or per acre. Always check which one you are reading.
• Hectares are used in most of the world, and a US acre is about 40 percent of a hectare.

Where these numbers come from

The factors are exact or standard definitions: 1 acre = 43,560 square feet, 1 square foot = 0.09290304 square metres, and 1 hectare = 10,000 square metres. We check every converter in both directions before release.