Hectares to Acres

Convert ha to ac instantly — with a table, common amounts, and a live calculator.

1 ha equals 2.47 ac.

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Result (ac)2.47 ac

ha to ac table

haac
0.25 ha0.618 ac
0.5 ha1.24 ac
0.75 ha1.85 ac
1 ha2.47 ac
1.5 ha3.71 ac
2 ha4.94 ac
2.5 ha6.18 ac
3 ha7.41 ac
4 ha9.88 ac
5 ha12.36 ac
6 ha14.83 ac
7 ha17.3 ac
7.5 ha18.53 ac
8 ha19.77 ac
10 ha24.71 ac
12 ha29.65 ac
15 ha37.07 ac
20 ha49.42 ac
25 ha61.78 ac
50 ha123.55 ac
75 ha185.33 ac
100 ha247.11 ac

ac to ha (reverse)

acha
0.25 ac0.101 ha
0.5 ac0.202 ha
0.75 ac0.304 ha
1 ac0.405 ha
1.5 ac0.607 ha
2 ac0.809 ha
2.5 ac1.01 ha
3 ac1.21 ha
4 ac1.62 ha
5 ac2.02 ha
6 ac2.43 ha
7 ac2.83 ha
7.5 ac3.04 ha
8 ac3.24 ha
10 ac4.05 ha
12 ac4.86 ha
15 ac6.07 ha
20 ac8.09 ha
25 ac10.12 ha
50 ac20.23 ha
75 ac30.35 ha
100 ac40.47 ha

Common amounts

haac
1/8 ha0.309 ac
1/4 ha0.618 ac
1/3 ha0.824 ac
1/2 ha1.24 ac
2/3 ha1.65 ac
3/4 ha1.85 ac
1 ha2.47 ac
1 1/4 ha3.09 ac
1 1/2 ha3.71 ac
1 3/4 ha4.32 ac
2 ha4.94 ac
2 1/2 ha6.18 ac

How it scales

2.54.97.49.901234ha

1 acre in other units

43560ft²4840yd²4047m²0.4ha

The ratio at a glance

1 ha2.47 ac

Imperial and metric area units

Square inches, square feet, square yards, acres, and square miles belong to the imperial/US system, while square centimeters, square meters, hectares, and square kilometers are metric. A square foot is defined as exactly 0.09290304 square meters, and an acre as exactly 4,046.8564224 square meters.

Area conversions are exact and rest on fixed factors — for more unit pairs, use our area conversion hub.

Related conversions

Frequently asked questions

How many ac are in a ha?

1 ha equals 2.47 ac.

How many ac are in 2 ha?

2 ha equal 4.94 ac.

How do I convert ha to ac?

Multiply the number of ha by 2.47 to get ac.

How big is an acre?

One acre equals exactly 4,046.8564224 square meters (43,560 square feet, or 4,840 square yards) and about 0.4047 hectares. There are 640 acres in a square mile.

Why are there imperial and metric area units?

Square inches, square feet, square yards, acres, and square miles belong to the imperial/US system, while square centimeters, square meters, hectares, and square kilometers are metric. All conversions rest on fixed, exact factors.

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