Hectares to Square Miles Converter
1 hectare ≈ 0.00386102159 square miles
1 hectare equals 0.00386102 square miles
How to convert hectares to square miles
Area factors are squared length factors: 1 ft² = (0.3048 m)². The acre here uses international feet; historic US survey acres differ slightly.
mi² = ha × 0.003861021585One hectare is 0.003861021585 square miles, so a single multiplication converts any value.
0.0386102 mi² ≈ 10 × 0.003861021585Hectares to square miles conversion table
Common values in hectares, converted to square miles.
| Hectares (ha) | Square miles (mi²) |
|---|---|
| 1 | 0.0038610216 |
| 2 | 0.0077220432 |
| 3 | 0.011583065 |
| 4 | 0.015444086 |
| 5 | 0.019305108 |
| 10 | 0.038610216 |
| 20 | 0.077220432 |
| 25 | 0.09652554 |
| 50 | 0.19305108 |
| 100 | 0.38610216 |
| 250 | 0.9652554 |
| 500 | 1.9305108 |
| 1,000 | 3.8610216 |
About these units
hectareha
Exactly 10,000 square metres, a square 100 m on each side. The metric land unit.
square milemi²
Exactly 640 acres. Used for county and country areas.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.