Square Feet Converter — ft² to m², acres, hectares & more
Type an area in square feet and get the equivalent in square metres, square inches, square yards, acres, hectares, square kilometres, and square miles — all at once. Every conversion factor is exact (based on 1 ft = 0.3048 m by definition).
ft²
1 ft² = 0.09290304 m² (exact)
- 1
Foot in metres
1 ft = 0.3048 m → 1 ft² = 0.3048² = 0.09290304The international foot is defined as exactly 0.3048 m. - 2
Square metres
1,000 × 0.09290304 = 92.9030
How does this calculator work?
One square foot equals exactly 0.09290304 m², 144 in², 1/9 yd², 1/43 560 acres, and 1/27 878 400 sq miles. Enter any area in sq ft to convert it to all common units simultaneously. All factors are exact (derived from the defined value 1 ft = 0.3048 m).
Formula
How this is calculated
The foot is defined as exactly 0.3048 metres, so one square foot (1 ft × 1 ft) equals exactly 0.3048² = 0.09290304 square metres. All other metric conversions (hectares, km²) follow from that single exact relationship.
US customary conversions are also exact: 1 sq ft = 144 sq in (12² inches in a foot) and 1 sq yd = 9 sq ft (3² feet in a yard). The acre is defined as 43 560 sq ft, and a square mile is 640 acres, giving 27 878 400 sq ft per sq mi.
This calculator applies these multipliers directly, so the results carry no rounding error in the input conversion step — only display rounding from the chosen decimal places.
Frequently asked questions
Exactly 0.09290304 m². Since 1 ft is defined as 0.3048 m, squaring both sides gives 1 ft² = 0.3048² m² = 0.09290304 m² (no rounding).
Exactly 43 560 square feet. So to convert sq ft to acres, divide by 43 560.
A quick mental rule: divide by 10.764 (the number of sq ft in 1 sq m). For a rough estimate you can divide by about 11 and accept ~2% error.
Also known as
TG we-Calculate Editorial Team. (2026). Square Feet Converter — ft² to m², acres, hectares & more [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/square-feet-converter
TG we-Calculate Editorial Team. "Square Feet Converter — ft² to m², acres, hectares & more." TG we-Calculate. 2026. https://we-calculate.com/calculator/square-feet-converter.
TG we-Calculate Editorial Team, "Square Feet Converter — ft² to m², acres, hectares & more," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/square-feet-converter
@misc{wecalculate_square_feet_converter, title = {Square Feet Converter — ft² to m², acres, hectares & more}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/square-feet-converter}}, year = {2026}, note = {TG we-Calculate} }
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