# Convert hectares to acres

Enter the number of hectares you want to convert to acres in the text box below. The conversion to area in acres will update as you type.

hectares (ha)
1 hectares = 2.471 acres

## Precise decimal and fraction answers

The conversion in acres rounded to six significant decimal places is 1 ha = 2.471054 acre. The precise fraction answer is 2 952/2021 acre.

### Decimal Precision

Conversion from one to ten decimal places

• 1 ha = 2.5 acre
• 1 ha = 2.47 acre
• 1 ha = 2.471 acre
• 1 ha = 2.4711 acre
• 1 ha = 2.47105 acre
• 1 ha = 2.471054 acre
• 1 ha = 2.4710538 acre
• 1 ha = 2.47105381 acre
• 1 ha = 2.471053815 acre
• 1 ha = 2.4710538147 acre

## Hectares to acres conversion factor and formulas

Formula

The conversion factor between hectares and acres is 2.471. This represents the ratio of acres per one hectare. To calculate the value in acres, we can either multiply by the conversion factor or divide by its inverse.

### Multiplication

To convert from hectares to acres, multiply hectares by 2.471.
The formula is expressed as:
ha × 2.471 = acre

### Division

Alternatively we can divide by the inverse conversion factor to get the same result.
The inverse of 2.471 is 1/2.471 or 0.405. To convert from hectares to acres, divide hectares by 0.405.
The formula is expressed as:
ha ÷ 0.405 = acre

Converting hectares to acres is a conversion between units from separate unit systems - hectares are metric (SI) defined units while acres are US Customary / UK Imperial .

SI Unit

The hectare is a metric measure of area defined by a square with sides 100 meters in length. One hundred hectares equal a square kilometer. The unit is widely used in the measure of large areas of land. While it is not an official SI unit, the hectare is fully compatible with the metric system and used in most countries which have adopted metric units.

## Reverse this conversion

Convert from acres to hectares instead.

## 1 hectares to other area units

### Metric

• 1 ha = 1 ha
• 1 ha = 0.01 km2
• 1 ha = 10,000 m2
• 1 ha = 1,000,000 dm2
• 1 ha = 1×108 cm2
• 1 ha = 1×1010 mm2
• 1 ha = 1×1016 µ2
• 1 ha = 1×1022 nm2

### Imperial/U.S.

• 1 ha = 2.471 acre
• 1 ha = 0.004 sq mi
• 1 ha = 11,959.9 sq yd
• 1 ha = 107,639.104 sq ft
• 1 ha = 1.55×107 sq in

## References and Citations

1. International Bureau of Weights and Measures (BIPM) The International System of Units (SI)
2. National Institute of Standards and Technology (NIST) General Tables of Units of Measurement

## Hectares to acres conversion table

ha acre
1 ha 2.471 acre
2 ha 4.942 acre
3 ha 7.413 acre
4 ha 9.884 acre
5 ha 12.355 acre
6 ha 14.826 acre
7 ha 17.297 acre
8 ha 19.768 acre
9 ha 22.239 acre
10 ha 24.711 acre
ha acre
20 ha 49.421 acre
30 ha 74.132 acre
40 ha 98.842 acre
50 ha 123.553 acre
60 ha 148.263 acre
70 ha 172.974 acre
80 ha 197.684 acre
90 ha 222.395 acre
100 ha 247.105 acre
1,000 ha 2,471.054 acre