Convert Hectares to Square Miles

Enter the area in hectares below to get the value converted to square miles.

Results in Square Miles:

1 ha = 0.003861 sq mi

Do you want to convert square miles to hectares?

How to Convert Hectares to Square Miles

conversion scale showing hectares and equivalent square miles area values

To convert a hectare measurement to a square mile measurement, multiply the area by the conversion ratio. One hectare is equal to 0.003861 square miles, so use this simple formula to convert:

square miles = hectares × 0.003861

The area in square miles is equal to the hectares multiplied by 0.003861.

For example, here's how to convert 5 hectares to square miles using the formula above.

5 ha = (5 × 0.003861) = 0.019305 sq mi

Hectares and square miles are both units used to measure area. Keep reading to learn more about each unit of measure.

Hectares

One hectare is equal to 10,000 square meters, or the area of a square with 100 meter sides.

The hectare is an SI accepted unit for area for use with the metric system. In the metric system, "hecto" is the prefix for 10². Hectares can be abbreviated as ha, for example 1 hectare can be written as 1 ha.

Square Miles

One square mile is equal to the area of a square with sides that are 1 mile long. One square mile is roughly equal to 2.59 square kilometers.

The square mile is a US customary and imperial unit of area. Square miles can be abbreviated as sq mi, and are also sometimes abbreviated as mi². For example, 1 square mile can be written as 1 sq mi or 1 mi².

Hectare Measurements and Equivalent Square Mile Conversions

Common hectare values converted to the equivalent square mile value
Hectares	Square Miles
1 ha	0.003861 sq mi
2 ha	0.007722 sq mi
3 ha	0.011583 sq mi
4 ha	0.015444 sq mi
5 ha	0.019305 sq mi
6 ha	0.023166 sq mi
7 ha	0.027027 sq mi
8 ha	0.030888 sq mi
9 ha	0.034749 sq mi
10 ha	0.03861 sq mi
11 ha	0.042471 sq mi
12 ha	0.046332 sq mi
13 ha	0.050193 sq mi
14 ha	0.054054 sq mi
15 ha	0.057915 sq mi
16 ha	0.061776 sq mi
17 ha	0.065637 sq mi
18 ha	0.069498 sq mi
19 ha	0.073359 sq mi
20 ha	0.07722 sq mi
21 ha	0.081081 sq mi
22 ha	0.084942 sq mi
23 ha	0.088803 sq mi
24 ha	0.092665 sq mi
25 ha	0.096526 sq mi
26 ha	0.100387 sq mi
27 ha	0.104248 sq mi
28 ha	0.108109 sq mi
29 ha	0.11197 sq mi
30 ha	0.115831 sq mi
31 ha	0.119692 sq mi
32 ha	0.123553 sq mi
33 ha	0.127414 sq mi
34 ha	0.131275 sq mi
35 ha	0.135136 sq mi
36 ha	0.138997 sq mi
37 ha	0.142858 sq mi
38 ha	0.146719 sq mi
39 ha	0.15058 sq mi
40 ha	0.154441 sq mi

More Hectare Area Conversions

US Customary

Convert to Acres: 1 ha is equal to 2.471054 acres
Convert to Square Yards: 1 ha is equal to 11,959.9 square yards
Convert to Square Feet: 1 ha is equal to 107,639.1 square feet
Convert to Square Inches: 1 ha is equal to 15,500,031 square inches

SI Units

Convert to Square Kilometers: 1 ha is equal to 0.01 square kilometers
Convert to Square Meters: 1 ha is equal to 10,000 square meters
Convert to Square Centimeters: 1 ha is equal to 100,000,000 square centimeters
Convert to Square Millimeters: 1 ha is equal to 10,000,000,000 square millimeters