Convert Square Mile to Hectare
1 square mile = 258.9988 hectare (ha). For example, 10 square mile = 2,589.988 hectare and 100 square mile = 25,899.88 hectare. Type any value below to convert square mile to hectare both ways — it runs entirely in your browser.
Square Mile to Hectare conversion formula
To convert square mile to hectare, multiply by 258.9988:
hectare = square mile × 258.9988
Going the other way, 1 hectare = 0.003861022 square mile, so
square mile = hectare × 0.003861022.
Square Mile to Hectare — worked examples
| Square Mile | Hectare |
|---|---|
| 1 mi² | 258.9988 ha |
| 2 mi² | 517.9976 ha |
| 3 mi² | 776.9964 ha |
| 5 mi² | 1,294.994 ha |
| 10 mi² | 2,589.988 ha |
| 25 mi² | 6,474.97 ha |
| 50 mi² | 12,949.94 ha |
| 100 mi² | 25,899.88 ha |
Square Mile ↔ Hectare reference table
| Square Mile → Hectare | Hectare → Square Mile |
|---|---|
| 1 mi² = 258.9988 ha | 1 ha = 0.003861022 mi² |
| 2 mi² = 517.9976 ha | 2 ha = 0.007722043 mi² |
| 5 mi² = 1,294.994 ha | 5 ha = 0.01930511 mi² |
| 10 mi² = 2,589.988 ha | 10 ha = 0.03861022 mi² |
| 20 mi² = 5,179.976 ha | 20 ha = 0.07722043 mi² |
| 50 mi² = 12,949.94 ha | 50 ha = 0.1930511 mi² |
| 100 mi² = 25,899.88 ha | 100 ha = 0.3861022 mi² |
| 250 mi² = 64,749.7 ha | 250 ha = 0.9652554 mi² |
| 500 mi² = 129,499.4 ha | 500 ha = 1.930511 mi² |
| 1000 mi² = 258,998.8 ha | 1000 ha = 3.861022 mi² |
About square mile and hectare
Square Mile: A square mile is a 1 mi × 1 mi square — 640 acres (2.589988 km²), the large imperial/US unit for districts, farms and map areas.
Hectare: A hectare is 10,000 square metres (about 2.471 acres) — the metric land unit.
Indian land units can vary by state and local custom. This converter uses the most widely accepted standard value; always confirm against your local revenue records (patwari / tehsil) for legal transactions.
Frequently asked questions
- How many hectare are in 1 square mile?
- 1 square mile = 258.9988 hectare (ha).
- How do I convert square mile to hectare?
- Multiply the number of square mile by 258.9988. For example, 10 square mile = 10 × 258.9988 = 2,589.988 hectare.
- How many square mile are in 1 hectare?
- 1 hectare = 0.003861022 square mile.
- Which is bigger, square mile or hectare?
- 1 square mile equals 258.9988 hectare, so a square mile is the larger unit.