Area Converter
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How the area converter works
From square millimeters to square miles — land, floor plans, paper sizes. Instant conversion plus your value in all ten units, swap button and precision included.
Land units, demystified
An acre (4,047 m²) is roughly a football field without end zones; a hectare (10,000 m²) is about 2.5 acres. A square mile holds exactly 640 acres.
Frequently asked questions
How big is an acre?
4,046.86 m² — about 0.4 hectares, or roughly 75% of a football field.
Hectare vs acre?
1 hectare = 2.471 acres. Hectares are metric (10,000 m²); acres are imperial.
How many sq ft in a sq meter?
10.764 ft². So a 100 m² apartment is about 1,076 sq ft.
What is a square mile in km²?
2.59 km² — and it contains exactly 640 acres.