Square Mile to Hectare Converter
Unit Converter
Instant · Precise · Universal
23 units available
6 categories total
How to Convert Square Mile to Hectare
To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.
1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.
For example, 1 Square Mile (mi²) = 258.998811 Hectare (ha).
Square Mile to Hectare — Common Values
| Square Mile (mi²) | Hectare (ha) |
|---|---|
| 0.1 | 25.8998811 |
| 0.5 | 129.4994055 |
| 1 | 258.998811 |
| 2 | 517.9976221 |
| 5 | 1294.994055 |
| 10 | 2589.98811 |
| 25 | 6474.970276 |
| 50 | 12949.94055 |
| 100 | 25899.8811 |
| 500 | 129499.4055 |
| 1000 | 258998.811 |
About Square Mile (mi²)
Definition
The square mile is an imperial unit of area equal to the area of a square with sides of one mile (2.59 km²).
Mathematical Relationship
1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.
Conversion Formula
To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.
Practical Applications
City areas, county sizes, population density, land surveys, and geographic comparisons.
Interesting Facts
Manhattan is about 22.8 mi². The state of Texas is 268,596 mi². Rhode Island (smallest US state) is 1,214 mi².
Common Mistakes
1 mi ≈ 1.609 km, but 1 mi² ≈ 2.59 km² (not 1.609). Area conversion squares the factor.
Educational Tips
1 mi² = 640 acres. This 'section' (640 acres) is the basis of the US Public Land Survey System grid.
About Hectare (ha)
Definition
The hectare is a metric unit of area equal to 10,000 square meters, or 100 ares — the area of a square 100 meters on each side.
Mathematical Relationship
1 ha = 10,000 m² = 100 a = 0.01 km² ≈ 2.471 acres.
Conversion Formula
To convert ha to acres: multiply by 2.471. To km²: divide by 100. To m²: multiply by 10,000.
Practical Applications
Farm sizes, vineyard areas, forestry management, urban planning zones, and national park boundaries.
Interesting Facts
Singapore has a total area of about 72,800 ha. The Amazon rainforest loses about 1 million ha per year to deforestation.
Common Mistakes
Confusing hectare with acre — a hectare is about 2.47 acres, not equal to one. Also, 1 km² = 100 ha, not 1,000.
Educational Tips
A hectare = 100 m × 100 m. A football field is about 0.7 ha. Two football fields ≈ 1.4 ha — close to 1 ha.