History & Background
The hectare (10,000 m²) was introduced with the metric system in 1795 as a practical land-measure. The acre dates to medieval England — originally the area a yoke of oxen could plough in a day, later standardised to 4,840 square yards (4,046.86 m²).
Conversion Formulas
1 hectare = 10,000 m² = 2.47105 acres1 acre = 4,046.8564 m² = 0.404686 ha1 km² = 100 ha = 247.105 acres1 m² = 10.7639 ft²1 ft² = 0.092903 m²
Common Values
- 1 ha = 2.47 acres (about a soccer pitch)
- 1 acre ≈ 0.405 ha
- 100 m² apartment ≈ 1,076 ft²
- 1 km² = 247.1 acres = 100 ha
- Vatican City = 0.49 km² = 49 ha
Common Uses
- Real estate listings (apartment size in m² vs ft²)
- Farm and forestry land management
- Solar panel array sizing
- Sports field and stadium planning
- Insurance and property tax calculations
Frequently Asked Questions
How many square feet in a square meter?
10.7639 ft². A 100 m² flat = 1,076 ft².
How many acres in a hectare?
2.47105 acres. So 4 ha ≈ 9.88 acres.
How big is 1 acre?
About 4,047 m², or roughly 70 m × 58 m. Slightly smaller than an American football field.
What is the metric of an acre?
There is no exact metric equivalent. The closest is the hectare (1 ha ≈ 2.47 acres).