Area
Square metres, acres, hectares…
The Area Converter handles the most common units used to measure land, floor space, and surface area: square millimetres, square centimetres, square metres, hectares, square kilometres, square inches, square feet, square yards, acres, and square miles.
Area conversions surprise people because squaring a linear conversion factor amplifies it. 1 metre is ~3.28 feet, but 1 square metre is ~10.76 square feet, because area scales with the square of the linear ratio.
Supported units
- Metric: square millimetre, square centimetre, square metre, hectare (10,000 m²), square kilometre.
- Imperial / US: square inch, square foot, square yard, acre (43,560 sq ft), square mile.
Key conversion factors
- 1 m² = 10.7639 ft²
- 1 ft² = 0.09290 m²
- 1 acre = 4,046.86 m² = 4,840 yd² = 43,560 ft²
- 1 hectare = 10,000 m² ≈ 2.47105 acres
- 1 square mile = 640 acres = 2.589988 km²
Worked example
A property listed as 0.25 acres — how big is that in square metres?
0.25 × 4,046.86 ≈ 1,011.7 m²
Or a 1,200 sq ft apartment in square metres: 1,200 × 0.0929 ≈ 111.5 m².
When to use this
Real estate listings (especially when buying or renting internationally), gardening and landscaping, flooring projects, and any context where you need to compare land areas across measurement systems.
Linear vs area scaling
If you double a building's linear dimensions, you quadruple its floor area. Keep that in mind when scaling plans — it is a common source of estimation error.
Frequently asked questions
How big is an acre, visually?
Roughly the size of an American football field without the end zones, or about 90% of a standard soccer pitch.
What is a hectare?
A metric unit equal to 10,000 square metres, or roughly 2.47 acres. Common in agriculture and forestry outside the US.
Is square footage the same as floor area?
Usually yes, but real estate listings sometimes include or exclude balconies, basements, and garages differently. Always check what is included in the quoted figure.