Convert hectares to acres

Conversion Calculator

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How to convert hectares to acres: Enter a value in the hectares field and click on the "Calculate acres" button. Your answer will appear in the acres field.

Conversion Definitions

The following is a list of definitions relating to conversions between hectares and acres.

What is a hectare (ha)?

A hectare is a unit of area in the Metric System. The symbol for hectare is ha. There are 0.404685642 hectares in an acre.

What is an acre (ac)?

An acre is a unit of area in both US Customary Units as well as the Imperial System. The symbol for acre is ac. There are 2.47105382 acres in a hectare.

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 acres is:

acres = hectares ÷ 0.404685642

Conversion Example

Next, let's look at an example showing the work and calculations that are involved in converting from hectares to acres (ha to ac).

Square Centimeter to Acres Conversion Example

Task: Convert 40 hectares to acres (show work)

Formula:
hectares ÷ 0.404685642 = acres

Calculations:
40 hectares ÷ 0.404685642 = 98.84215265 acres

Result:
40 hectares is equal to 98.84215265 acres

Conversion Table

For quick reference purposes, below is a conversion table that you can use to convert from hectares to acres.

Hectares to Acres Conversion Chart

hectares (ha)	acres (ac)
1 hectares	2.47105382 acres
2 hectares	4.94210763 acres
3 hectares	7.41316145 acres
4 hectares	9.88421526 acres
5 hectares	12.35526908 acres
6 hectares	14.8263229 acres
7 hectares	17.29737671 acres
8 hectares	19.76843053 acres
9 hectares	22.23948435 acres
10 hectares	24.71053816 acres
20 hectares	49.42107632 acres
30 hectares	74.13161448 acres
40 hectares	98.84215265 acres
50 hectares	123.55269081 acres
75 hectares	185.32903621 acres
100 hectares	247.10538161 acres
250 hectares	617.76345403 acres
500 hectares	1,235.52690807 acres
750 hectares	1,853.2903621 acres
1,000 hectares	2,471.05381614 acres
2,500 hectares	6,177.63454034 acres
5,000 hectares	12,355.26908069 acres
7,500 hectares	18,532.90362103 acres
10,000 hectares	24,710.53816137 acres
25,000 hectares	61,776.34540343 acres
50,000 hectares	123,552.69080686 acres
75,000 hectares	185,329.03621028 acres
100,000 hectares	247,105.38161371 acres
250,000 hectares	617,763.45403428 acres

Related Units

This table provides a summary of the Area units within their respective measurement systems.

Unit	Symbol	Measurement System	Description
square inches	in² or sq in	US Customary Units/Imperial System	1,296 in² = 1 yd²
square feet	ft² or sq ft	US Customary Units/Imperial System	1 ft² = 144 in²
square yards	yd² or sq yd	US Customary Units/Imperial System	1 yd² = 9 ft²
acres	ac	US Customary Units/Imperial System	1 ac = 4,840 yd²
square miles	mi² or sq mi	US Customary Units/Imperial System	1 mi² = 640 ac
square millimeters	mm²	Metric System	1 m² = 1,000,000 mm²
square centimeters	cm²	Metric System	1 m² = 10,000 cm²
square decimeters	dm²	Metric System	1 m² = 100 dm²
square meters	m²	Metric System	base unit
square decameters	dam²	Metric System	1 dam² = 100 m²
square hectometers	hm²	Metric System	1 hm² = 10,000 m²
hectares	ha	Metric System	1 ha = 10,000 m²
square kilometers	km²	Metric System	1 km² = 1,000,000 m²

Note: For area conversions, US Customary Units and the Imperial System are equivalent.

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