Convert Hectares to square miles

1 hectare = 0.003861022 square miles · mi² = ha ÷ 258.998811

ha
Square miles
0.003861022mi²

1 hectare = 0.003861022 square miles

When you need this conversion

This conversion goes from hectares, the metric land measure used in agriculture worldwide, to square miles, used for US counties, states, and large regions. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.

Hectares to square miles conversion table

Conversion table from hectares to square miles
Hectares (ha)Square miles (mi²)
1 ha0.003861022 mi²
2 ha0.007722043 mi²
3 ha0.011583 mi²
5 ha0.019305 mi²
10 ha0.03861 mi²
15 ha0.057915 mi²
20 ha0.07722 mi²
25 ha0.096526 mi²
50 ha0.193051 mi²
75 ha0.289577 mi²
100 ha0.386102 mi²
250 ha0.965255 mi²
500 ha1.9305 mi²
1,000 ha3.861 mi²

The formula

mi² = ha ÷ 258.998811

Because both units measure area, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.

Convert the other way

Square miles to hectares →

Related area conversions

All area conversions →

Frequently asked questions

How many square miles are in a hectare?
There are 0.003861022 square miles in 1 hectare. The formula is mi² = ha ÷ 258.998811.
How do you convert hectares to square miles?
Use the formula mi² = ha ÷ 258.998811. For example, 10 hectares equals 0.03861 square miles.
Is the hectares to square miles conversion exact?
Yes. Hectares and square miles are both units of area, related by an exact defined factor. Displayed results are rounded for readability.
What is ha short for?
ha is the standard symbol for hectare. mi² is the symbol for square mile.