Area converter
Square feet, square meters, acres and hectares
Type an area and pick two units. The example turns 1,000 square feet into square meters.
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The same amount in every unit
How areas convert
An area unit is a length unit squared, so its factor is the length factor multiplied by itself. One foot is exactly 0.3048 m, so one square foot is 0.3048 × 0.3048 = 0.09290304 square meters exactly. A square yard is 9 square feet, an acre 43,560 square feet (4046.8564224 m²) and a square mile 640 acres. A hectare is 10,000 square meters, a square 100 m on each side. Sources: NIST Handbook 44, Appendix C, and the SI Brochure (hectare).
Area, not room size
This page changes an area you already know into other units. To find the area of a room, multiply its length by its width in the same unit first: a room 12 ft by 15 ft is 180 square feet, which this page turns into about 16.72 square meters.
Acres in old records
The acre here is the international acre. Older US land records may use the survey acre, based on the US survey foot, which is about 4 parts in a million larger. On a 100-acre farm that is about 1.6 square meters.
Quick checks
A square meter is about 10.76 square feet. A hectare is about 2.47 acres.
Rounding
The answer is worked out from the exact definition, then shown to 4 decimal places (6 significant figures for numbers below 1). It says "exactly" only when nothing was rounded.