Hectares to Acres

1 ha = 2.471054 ac

Hectares to acres helps Americans and Britons picture land areas given in metric units, such as farms, vineyards, parks, and forests abroad. A hectare is a square 100 meters on each side, and it is the standard land measure in much of Europe, Latin America, and Australia.

From

When you need to convert hectares to acres

Picturing the size of a European vineyard or farm listing
Comparing national park or wildfire areas reported in hectares
Converting agricultural yields per hectare to US per-acre figures
Evaluating overseas land purchases in familiar units

How to convert hectares to acres

ac = ha × 2.471054

Example: 5 ha = 12.35527 ac

Common land areas

Hectares (ha)	Acres (ac)
0.1 ha	0.2471054 ac
0.5 ha	1.235527 ac
1 ha	2.471054 ac
2 ha	4.942108 ac
5 ha	12.35527 ac
10 ha	24.71054 ac
50 ha	123.5527 ac
100 ha	247.1054 ac
500 ha	1,235.527 ac
1,000 ha	2,471.054 ac

Tips for converting hectares to acres

Multiply by about 2.471. Multiplying by 2.5 is a quick estimate that runs about 1% high.
Per-area rates work the other way round: a yield per hectare becomes a smaller number per acre, so divide by 2.471 instead.
A square kilometer is 100 hectares, which helps when large areas are reported in km².

Hectares to Acres conversion table

Hectares (ha)	Acres (ac)
1 ha	2.471054 ac
2 ha	4.942108 ac
3 ha	7.413161 ac
4 ha	9.884215 ac
5 ha	12.35527 ac
6 ha	14.82632 ac
7 ha	17.29738 ac
8 ha	19.76843 ac
9 ha	22.23948 ac
10 ha	24.71054 ac
15 ha	37.06581 ac
20 ha	49.42108 ac
25 ha	61.77635 ac
30 ha	74.13161 ac
40 ha	98.84215 ac
50 ha	123.5527 ac
75 ha	185.329 ac
100 ha	247.1054 ac
250 ha	617.7635 ac
500 ha	1,235.527 ac
1,000 ha	2,471.054 ac

About the units

Hectares: The hectare is a metric unit of area equal to 10,000 square meters (a 100 m × 100 m square), commonly used for farmland and forests.

Acres: The acre is an imperial and US customary unit of land area equal to 43,560 square feet, or about 4,046.86 square meters.

Frequently asked questions

How many acres are in 1 hectare?

1 hectare equals 2.471054 acres.

How many hectares are in 1 acre?

1 acre equals 0.4046856 hectares.

How do I convert hectares to acres?

Use the formula ac = ha × 2.471054.

What is 10 hectares in acres?

10 hectares equals 24.71054 acres.

Related conversions

Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated October 17, 2026