Hectares to Acres – ha to ac

Use this simple calculator to convert hectares to acres. Put the number of hectares in the value field, and the calculator will automatically calculate acres. Or, use the hectare-to-acres formula below to make your own calculations.

Convert Hectares(ha) to Acres(ac)

Type a value in the Hectares(ha) field to convert the value to Acres(ac):

To convert from hectares to acres, multiply your figure by 2.471.

Hectares(ha) to Acres(ac)

Hectares to Acres formula:


Here’s a table showing common hectares to acres calculations:

Hectares [ha]Acres [ac]

How to Convert a Hectare to Other Units

Here’s how to convert a hectare to other popular units of measurement:

A hectare is equal to 10,000 square meters and 2.471 acres in the British Imperial System. To convert hectares to square meters, multiply the value of hectares by 10,000.

Square meters = hectares x 10,000

A hectare is equal to 0.01 square kilometers. To convert hectares to square kilometers, divide the value of hectares by 100.

Square kilometers = hectares ÷ 100

There are approximately 107,639 square feet in one hectare. To convert hectares to square feet, multiply the value of hectares by 107,639.

Square feet = hectares x 107,639

One hectare contains 0.00386102 square miles. To convert hectares to square miles, divide the hectare value by 259.

Square miles = hectares ÷ 259

What is a Hectare?

A hectare is a unit of measurement for assessing the size of land. The symbol for hectare is ha, and it’s a unit of the metric system. The hectare is an accepted measurement in countries that use the metric system.

The metric system originated around 1795 when the measurement “are” was introduced. An are is equal to one square decametre or one hundred square meters. A hectare is the equivalent of 100 ares. Because it’s so much larger than are, the hectare became standard for land measurement.

In 1960, members of the 11th General Conference on Weights and Measurements created the International Systems of Units (SI) to establish a consistency of measurements from country to country.

In this development, the “are” was left out of the metric system or SI. But, hectare remained a recognized measurement. Here’s a breakdown of how a hectare compares to other common measurements:

  • A hectare is equivalent to 2.471 acres
  • One hectare is equal to 107,639 sq ft
  • A hectare is the same as 10,000 sq km

What is an Acre?

An acre is a form of land measurement used in the United States, the United Kingdom, the US Virgin Islands, some parts of South Asia, and a few other countries. An acre is a measurement from the Imperial System and US Customary Units.

The original measure of an acre had the definition of “one chain by one furlong” or 66 feet x 660 feet. Here’s a breakdown of an acre compared to other common measurements:

  • 1 acre is equivalent to 0.4047 hectares
  • One acre equals 43,560 square feet
  • An acre is the same as 4,047 square meters
Acres (ac)Hectares (ha)
0.5 ac0.2023 ha
1 ac0.40469 ha
1.5 ac0.6070 ha
2 ac0.80937 ha
2.5 ac1.0117 ha
3 ac1.2140 ha
3.5 ac1.4163 ha
4 ac1.6187 ha
5 ac2.0234 ha
10 ac4.0468 ha
15 ac6.0702 ha
25 ac10.1171 ha
50 ac20.2342 ha
100 ac40.4685 ha
150 ac60.7028 ha

Frequently Asked Questions (FAQ)FAQ

How long are 10 hectares?

Hectares is a measurement of area, not a measurement of length. If a hectare was a perfect square, it would have four 100-meter sides. So 10 perfectly square hectares would be 1,000 meters long or 3,280 feet on all four sides.

How many football fields are 10 hectares?

One football field is approximately 1.32 acres or 0.53 hectares. Therefore, 10 hectares equals 18.87 football fields.

Can you compare hectares to acres?

You can compare hectares to acres. One hectare (ha) is the equivalent of 2.471 acres. Since some countries measure land in hectares and others use acres, you’ll need to know both if purchasing land abroad. There are even some instances, like in Canada or Australia, where residents may use both units of measurement.

Is a hectare equal to an acre?

A hectare is not equal to an acre – it’s 2.471 times larger.

How many acres are 70 hectares?

Seventy hectares equals 172.97 acres.

How many acres are 21 hectares?

There are 51.89 acres in 21 hectares.

How many acres are 1.52 hectares?

There are 3.76 acres in 1.52 hectares.

How big is a hectare in Australia?

In Australia (and other countries that use the metric system), a hectare equals 10,000 square meters or 2.471 acres.

Does Australia use hectares or acres?

Australia uses hectares as a form of land area measurement. Some exceptions exist, like in rural land for sale, where acres might be used.