This area converter converts between the world’s area units — acres, hectares, square meters, square feet, square yards, square miles and square kilometers — in both directions, with land-measure context built in.
The Land Units, Decoded
An acre is 43,560 sq ft — historically a day’s plowing for a team of oxen, geometrically a furlong (660 ft) by a chain (66 ft). A hectare is the metric answer: a 100 m square, 10,000 m², equal to 2.471 acres. US real estate speaks acres and square feet; the rest of the world speaks hectares and square meters; this converter is fluent in both, instantly. Need an area from dimensions instead? That’s our Area Calculator. Part of our Conversion Calculators collection.
Quick Reference
| 1 unit | = in sq ft | = in m² | = in acres |
|---|---|---|---|
| 1 sq yard | 9 | 0.836 | 0.000207 |
| 1 acre | 43,560 | 4,046.86 | 1 |
| 1 hectare | 107,639 | 10,000 | 2.471 |
| 1 sq mile | 27,878,400 | 2,589,988 | 640 |
| 1 sq km | 10,763,910 | 1,000,000 | 247.1 |
Worked Examples (Verified)
- A football field (including end zones, 57,600 sq ft) = 1.32 acres — “an acre and a third” is the honest version of the internet’s favorite comparison
- A quarter-acre suburban lot = 10,890 sq ft = 1,011.7 m²
- 100 hectares of farmland = 247.1 acres
Related Tools
- Area Calculator — area from shapes and dimensions
- Length Converter — the 1-D sibling
- Conversion Calculators — the full collection
Frequently Asked Questions
How many square feet are in an acre?
43,560 — a number worth memorizing if you ever read a US property listing. An acre is also 4,840 sq yards or 4,046.86 m².
Which is bigger, an acre or a hectare?
A hectare, by a lot: 1 hectare = 2.471 acres (10,000 m² vs the acre’s 4,047 m²). Olympic stadiums and farms trade in hectares nearly everywhere outside the US.
How many acres are in a square mile?
Exactly 640 — a “section” in US land surveying, which subdivides into the quarter-sections (160 acres) of homestead fame.
How do I convert square meters to square feet?
Multiply by 10.7639. A 100 m² apartment is 1,076 sq ft — or use the converter above in both directions.
Why does my country use different units?
History: acres descend from English field agriculture; hectares from the metric system’s decimal land reform. Listings near borders often print both — now you can check either.
Is this area converter free?
Yes — free, instant, no sign-up.