Online calculator to convert hectares to square miles (ha to mi2) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Area units.
Conversion Calculator
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Convert hectares to mi2
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between hectares and square miles.
What is a hectare (ha)?
A hectare is a unit of area in the Metric System. The symbol for hectare is ha. There are 258.998811 hectares in a square mile.
What is a square mile (mi2)?
A square mile is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square mile is mi2 or sq mi. There are 0.00386102 square miles in a hectare. A square mile is calculated as the area of a square that has 1 mile on each side.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from hectares to mi2 is:
mi2 = hectares ÷ 258.998811
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from hectares to square miles (ha to mi2).
Hectares to Square Miles Conversion Example
Task: Convert 250 hectares to square miles (show work) Formula: hectares ÷ 258.998811 = mi2 Calculations: 250 hectares ÷ 258.998811 = 0.9652554 mi2 Result: 250 hectares is equal to 0.9652554 mi2
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from hectares to mi2.
Hectares to Square Miles Conversion Chart
| hectares (ha) | square miles (mi2) |
|---|---|
| 1 hectares | 0.00386102 mi2 |
| 2 hectares | 0.00772204 mi2 |
| 3 hectares | 0.01158306 mi2 |
| 4 hectares | 0.01544409 mi2 |
| 5 hectares | 0.01930511 mi2 |
| 6 hectares | 0.02316613 mi2 |
| 7 hectares | 0.02702715 mi2 |
| 8 hectares | 0.03088817 mi2 |
| 9 hectares | 0.03474919 mi2 |
| 10 hectares | 0.03861022 mi2 |
| 20 hectares | 0.07722043 mi2 |
| 30 hectares | 0.11583065 mi2 |
| 40 hectares | 0.15444086 mi2 |
| 50 hectares | 0.19305108 mi2 |
| 75 hectares | 0.28957662 mi2 |
| 100 hectares | 0.38610216 mi2 |
| 250 hectares | 0.9652554 mi2 |
| 500 hectares | 1.93051079 mi2 |
| 750 hectares | 2.89576619 mi2 |
| 1,000 hectares | 3.86102159 mi2 |
| 2,500 hectares | 9.65255396 mi2 |
| 5,000 hectares | 19.30510793 mi2 |
| 7,500 hectares | 28.95766189 mi2 |
| 10,000 hectares | 38.61021586 mi2 |
| 25,000 hectares | 96.52553965 mi2 |
| 50,000 hectares | 193.0510793 mi2 |
| 75,000 hectares | 289.57661894 mi2 |
| 100,000 hectares | 386.10215859 mi2 |
| 250,000 hectares | 965.25539648 mi2 |
Related Units
This table provides a summary of the Area units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| square inches | in2 or sq in | US Customary Units/Imperial System |
| square feet | ft2 or sq ft | US Customary Units/Imperial System |
| square yards | yd2 or sq yd | US Customary Units/Imperial System |
| acres | ac | US Customary Units/Imperial System |
| square miles | mi2 or sq mi | US Customary Units/Imperial System |
| square millimeters | mm2 | Metric System |
| square centimeters | cm2 | Metric System |
| square decimeters | dm2 | Metric System |
| square meters | m2 | Metric System |
| square decameters | dam2 | Metric System |
| square hectometers | hm2 | Metric System |
| hectares | ha | Metric System |
| square kilometers | km2 | Metric System |
Note: For area conversions, US Customary Units and the Imperial System are equivalent.
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