Convert hectares to square miles
1 ha = 0.00386102158542 mi² — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.003 861 021 585 42mi²
As a fraction: 9765625/2529285264
More converter tools
Readable results
Ranges, ± tolerances, feet/inches and clock durations work in the value field.
Unit picker
Export this result
1 ha = 0.00386102158542 mi²
Show this value in all 25 area units
- Square kilometers km² 0.01
- Square hectometers hm² 1
- Square decameters dam² 100
- Square meters m² 10 000
- Square decimeters dm² 1 000 000
- Square centimeters cm² 100 000 000
- Square millimeters mm² 10 000 000 000
- Square micrometers µm² 1e+16
- Square nanometers nm² 1e+22
- Hectares ha 1
- Ares a 100
- Decares daa 10
- Square inches in² 15 500 031.0001
- Square feet ft² 107 639.104 167
- Square yards yd² 11 959.900 463
- Square miles mi² 0.003 861 021 585 42
- Acres ac 2.471 053 814 67
- Roods ro 9.884 215 258 69
- Square rods rd² 395.368 610 347
- Sections section 0.003 861 021 585 42
- Townships twp 0.000 107 250 599 595
- Roofing squares sq 1076.391 041 67
- Circular mils cmil 19 735 252 413 900
- Barns b 1e+32
- Tsubos 坪 3025
Every row is Hectare (ha) converted through the square meter, in exact rational arithmetic.
How to convert hectares to square miles
Multiply the number of hectares by 0.00386102158542 to get square miles.
Hectare: The standard land-area unit almost everywhere outside the US.
Hectare to Square mile conversion table
| Hectares (ha) | Square miles (mi²) |
|---|---|
| 1 ha | 0.003 861 021 6 |
| 2 ha | 0.007 722 043 2 |
| 3 ha | 0.011 583 065 |
| 5 ha | 0.019 305 108 |
| 10 ha | 0.038 610 216 |
| 20 ha | 0.077 220 432 |
| 25 ha | 0.096 525 54 |
| 50 ha | 0.193 051 08 |
| 100 ha | 0.386 102 16 |
| 250 ha | 0.965 255 4 |
| 500 ha | 1.930 510 8 |
| 1000 ha | 3.861 021 6 |
Square mile to Hectare conversion table
| Square miles (mi²) | Hectares (ha) |
|---|---|
| 1 mi² | 258.998 81 |
| 2 mi² | 517.997 62 |
| 3 mi² | 776.996 43 |
| 5 mi² | 1294.9941 |
| 10 mi² | 2589.9881 |
| 20 mi² | 5179.9762 |
| 25 mi² | 6474.9703 |
| 50 mi² | 12 949.941 |
| 100 mi² | 25 899.881 |
| 250 mi² | 64 749.703 |
| 500 mi² | 129 499.41 |
| 1000 mi² | 258 998.81 |
Frequently asked
How many square miles are in a hectare?
One hectare equals 0.003861021585 square miles (ha → mi²). That figure is exact, not rounded.
How do you convert hectares to square miles?
Multiply the number of hectares by 0.00386102158542 to get square miles.
What is 1 mi² in hectares?
One square mile is 258.998811 hectares.
What is 10 ha in mi²?
10 ha = 0.038 610 216 mi².
What exactly is a hectare?
The standard land-area unit almost everywhere outside the US.