Calcylator

Square Mile to Hectare Converter (sq mi to ha)

Convert square mile (mi²) to hectare (ha).Unit Converter · Area

Quick answer

1 square mile (sq mi) is approximately equal to 258.9988 hectares (ha). 1 hectare (ha) is approximately equal to 0.00386102 square miles (sq mi).

To convert sq mi to ha, multiply the value in square miles by 258.998811034. For example, 10 sq mi = 2,589.98811034 ha, and 100 sq mi = 25,899.8811034 ha.

From · square mile

mi²

To · hectare

Value in hectare258.99881103ha
Loading chart…

Quick reference — square mile to hectare

Integrate to your site

More in Area

All Area converters

How to convert square miles to hectares

How many hectares are in a square mile? 1 square mile is about 258.9988 hectares. This free mi² to ha converter and square mile to hectare calculator gives the answer instantly for any value, and the same conversion is also written as sq mi to ha.

To convert square mile (mi²) to hectare (ha), multiply the value in square miles by 258.998811034.

ha = mi² × 258.998811034

  1. 1

    Take the value in square miles

    For example, 25 mi².

  2. 2

    Multiply by 258.998811034

    25 × 258.998811034.

  3. 3

    Read the answer in hectares

    25 mi² = 6,474.97027584 ha.

Square Mile to Hectare conversion table

Common values from 1 to 1,000 square miles converted to hectares.

Square Mile (mi²) to Hectare (ha), part 1
Square Mile (mi²)Hectare (ha)
1 mi²258.99881103 ha
2 mi²517.99762207 ha
3 mi²776.9964331 ha
4 mi²1,035.99524413 ha
5 mi²1,294.99405517 ha
6 mi²1,553.9928662 ha
7 mi²1,812.99167724 ha
8 mi²2,071.99048827 ha
9 mi²2,330.9892993 ha
10 mi²2,589.98811034 ha
15 mi²3,884.9821655 ha
20 mi²5,179.97622067 ha
25 mi²6,474.97027584 ha
Square Mile (mi²) to Hectare (ha), part 2
Square Mile (mi²)Hectare (ha)
30 mi²7,769.96433101 ha
40 mi²10,359.9524413 ha
50 mi²12,949.9405517 ha
60 mi²15,539.928662 ha
70 mi²18,129.9167724 ha
75 mi²19,424.9108275 ha
80 mi²20,719.9048827 ha
90 mi²23,309.892993 ha
100 mi²25,899.8811034 ha
250 mi²64,749.7027584 ha
500 mi²1,29,499.405517 ha
1,000 mi²2,58,998.811034 ha

About square miles and hectares

Square Mile (mi²)

A square mile is 640 acres, about 2.59 square kilometers. It is used for large land areas in the US and UK.

Hectare (ha)

A hectare (ha) is 10,000 square meters, about 2.47 acres. It is used for farmland and large plots.

mi² to ha: common questions

How many hectares are in 1 square mile?
1 square mile (sq mi) is approximately equal to 258.9988 hectares (ha). In short: 1 sq mi ≈ 258.9988 ha.
How do I convert square miles to hectares?
To convert mi² to ha, multiply the value in square miles by 258.998811034. For example, 5 mi² = 1,294.99405517 ha.
How do I convert hectares to square miles?
To convert ha to mi², divide the value in hectares by 258.998811034. Or open the Hectare to Square Mile converter, which does it for you.
What is 10 mi² in ha, and what is 100 mi²?
10 mi² = 2,589.98811034 ha, and 100 mi² = 25,899.8811034 ha. The table above lists more values from 1 to 1,000.
Is this mi² to ha converter accurate?
Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.

Hectare to Square Mile converter →All Area converters →

Integrate

Customize this calculator

Pick a look, copy the code, and this Square Mile to Hectare calculator — with its inputs and results — runs on your own website.

Theme color

Match your brand's colors

Corner style

Sharp, soft or fully rounded

Widget width

Compact, standard or full width

Live preview

Full width

The same inputs, result and chart as the calculator above, styled with your choices.

yoursite.com

Square Mile to Hectare

From · square mile

mi²

To · hectare

Value in hectare258.99881103ha
Loading chart…

Quick reference — square mile to hectare

Powered by Calcylator