Acres to Hectares — Free Online Converter

Convert between length, weight, temperature, volume, speed, area, and digital units.

How to Convert Acres to Hectares

Multiply the acre value by 0.404686. One acre equals 43,560 square feet, which converts to 0.40468564224 hectares.

Acres to Hectares Conversion Table

AcresHectares
0.50.202343
10.404686
20.809372
52.02343
104.04686
156.07029
208.09372
2510.1172
5020.2343
10040.4686
250101.171
500202.343
1000404.686

How Many Hectares in a Acre?

1 acre equals 0.404686 hectares. To convert any value, multiply the number of acres by 0.404686.

Common Use Cases

Farmers and ranchers in the United States who sell products internationally or apply for global agricultural programs need hectare equivalents of their acreage. A 160-acre quarter section (common in Midwestern land descriptions) equals about 64.75 hectares, and this conversion is required for applications to international commodity exchanges and foreign agricultural subsidies.

Environmental scientists calculating deforestation rates, wetland preservation areas, and carbon-credit offsets convert between acres and hectares depending on the reporting standard. US conservation easements are recorded in acres, but international climate agreements like the Paris Accord track land-use changes in hectares, making the conversion essential for global reporting.

Real-estate developers purchasing raw land in countries that use hectares must convert property sizes when presenting investment analyses to US-based stakeholders. A 50-hectare development site is about 123.6 acres, and the conversion helps American investors who think in acres estimate lot yields, road frontage, and comparable sales from domestic experience.

Related Conversions

Frequently Asked Questions

How many hectares are in 1 acre?
1 acre equals approximately 0.404686 hectares.
What is the formula to convert acres to hectares?
Multiply the number of acres by 0.404686. For example, 10 acres × 0.404686 = 4.047 hectares.
How big is 1 acre?
1 acre is 43,560 square feet, 4,840 square yards, or about 4,047 square meters. It is roughly the size of a football field without end zones.
What is the difference between an acre and a hectare?
A hectare is about 2.47 times larger than an acre. 1 hectare = 10,000 square meters, while 1 acre = 4,046.86 square meters.
How many hectares in 5 acres?
5 acres × 0.404686 = 2.023 hectares.
Why do most countries use hectares instead of acres?
The hectare is part of the metric system (1 ha = 10,000 m²), adopted internationally. Acres remain common in the US and UK due to historical usage in land records.
What is the history of the acre?
The acre originally measured how much land a yoke of oxen could plow in one day. It was standardized under Edward I of England in 1305 as 4,840 square yards.
What are common agricultural uses for hectares and acres?
Farms in the US and Canada are typically measured in acres; farms in Europe, Australia, and most of the world use hectares. 1 hectare ≈ 2.47 acres is a handy mental shortcut.