1 ha = 0.00386102 mi² (hectare → square mile)
1 ha = 0.00386102 mi²
1 hectare equals 0.00386102 square miles. To convert hectares to square miles, multiply the hectare value by 0.00386102. For quick reference: 1 ha = 0.00386102 mi², 5 ha = 0.0193051 mi², 10 ha = 0.0386102 mi², 100 ha = 0.386102 mi².
Square miles = Hectares × 0.00386102Hectares to square miles divides by 258.999 (1 sq mi = 258.9988 ha). A 1,000 ha estate is 3.86 sq mi. The conversion shows up in international forestry and conservation reporting, where holdings measured in hectares are presented to US audiences used to square miles. For estimates, 260 ha per square mile is accurate to within 0.04 %.
Start with your value in hectares.
Multiply the hectare value by 0.00386102. This is the exact conversion factor from hectares to square miles.
The product is your value in square miles. For example, 5 ha × 0.00386102 = 0.0193051 mi².
The exact factor from hectares to square miles is 0.00386102.
Square miles = Hectares × 0.00386102
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Hectares (ha) | Square miles (mi²) |
|---|---|
| 0.1 ha | 0.0003861 mi² |
| 0.25 ha | 0.00096526 mi² |
| 0.5 ha | 0.0019305 mi² |
| 1 ha | 0.003861 mi² |
| 2 ha | 0.007722 mi² |
| 3 ha | 0.011583 mi² |
| 4 ha | 0.015444 mi² |
| 5 ha | 0.019305 mi² |
| 6 ha | 0.023166 mi² |
| 7 ha | 0.027027 mi² |
| 8 ha | 0.030888 mi² |
| 9 ha | 0.034749 mi² |
| 10 ha | 0.03861 mi² |
| 12 ha | 0.046332 mi² |
| 15 ha | 0.057915 mi² |
| 20 ha | 0.07722 mi² |
| 25 ha | 0.096526 mi² |
| 30 ha | 0.11583 mi² |
| 40 ha | 0.15444 mi² |
| 50 ha | 0.19305 mi² |
| 60 ha | 0.23166 mi² |
| 70 ha | 0.27027 mi² |
| 75 ha | 0.28958 mi² |
| 80 ha | 0.30888 mi² |
| 90 ha | 0.34749 mi² |
| 100 ha | 0.3861 mi² |
| 120 ha | 0.46332 mi² |
| 150 ha | 0.57915 mi² |
| 200 ha | 0.7722 mi² |
| 250 ha | 0.96526 mi² |
| 300 ha | 1.1583 mi² |
| 400 ha | 1.5444 mi² |
| 500 ha | 1.9305 mi² |
| 600 ha | 2.3166 mi² |
| 750 ha | 2.8958 mi² |
| 800 ha | 3.0888 mi² |
| 1000 ha | 3.861 mi² |
| 1200 ha | 4.6332 mi² |
| 1500 ha | 5.7915 mi² |
| 2000 ha | 7.722 mi² |
| 2500 ha | 9.6526 mi² |
| 3000 ha | 11.583 mi² |
| 4000 ha | 15.444 mi² |
| 5000 ha | 19.305 mi² |
| 7500 ha | 28.958 mi² |
| 10000 ha | 38.61 mi² |
| 20000 ha | 77.22 mi² |
| 50000 ha | 193.05 mi² |
| 100000 ha | 386.1 mi² |
| 1000000 ha | 3861 mi² |
A full-size soccer pitch is roughly 0.7 ha. European farm sizes are typically quoted in hectares — the EU average is around 17 ha.
The hectare is the metric land unit — exactly 10,000 m², a square 100 meters on each side. It's the standard for farmland, forestry, and land registration in nearly every country outside the US. One hectare is about 2.47 acres. A rugby or soccer pitch is roughly 0.7–1 hectare.
The square mile is the imperial unit for large land areas, standard in US geography and census data. One square mile is exactly 2.589988110336 km² (1.609344 km squared), or 640 acres — the basis of the US Public Land Survey System's square-mile 'sections'. Los Angeles covers about 469 square miles.