Key Conversions
1 hectare
= 10,000 m² = 2.471 acres
1 acre
= 43,560 ft² = 4,047 m²
1 sq mile
= 640 acres = 2.59 km²
1 km²
= 100 ha = 247.1 acres
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Area Units Explained
✅ Last updated: August 12, 2026
Also searched as: area converter online free | square feet to acres converter | square meters to square feet | hectare to acre converter Optimized for US users with American units and terminology.
The square meter (m²) is the SI unit of area — the area of a 1m × 1m square. A hectare (10,000 m²) is the standard metric unit for land. An acre (4,047 m²) is the standard US/UK land unit. One square mile equals 640 acres or about 259 hectares.
One acre equals exactly 43,560 square feet. An acre is also equal to 4,840 square yards or 4,046.86 square meters. The word "acre" originally referred to the amount of land a yoke of oxen could plow in one day.
A hectare is 10,000 square meters (100m × 100m) or 2.47105 acres. It is the primary metric unit for measuring large land areas like farms and forests. One square kilometer equals 100 hectares.