Convert acre to hectare
1 acre = 0.40468564 hectares
What is acre?
An acre is a unit of area in imperial and US customary systems equal to 43,560 square feet. It is the standard unit for measuring agricultural land, property lots, and parks in the United States and United Kingdom.
Real-world uses
Acres are used for land parcels, farm sizes, and real estate in the US, UK, and some Commonwealth countries. Zoning laws often specify minimum lot sizes in acres. An American football field (including end zones) is about 1.32 acres.
History
The acre originated in medieval England as the amount of land a yoke of oxen could plough in one day. The word comes from Old English "æcer." It was standardized as a strip 1 furlong (660 ft) by 1 chain (66 ft), yielding 43,560 square feet.
Common mistakes
Assuming an acre is a square measure with specific dimensions—it is 43,560 sq ft but can be any shape. Also, confusing acres with hectares: 1 acre ≈ 0.405 hectares, so roughly 2.5 acres make one hectare.
What is hectare?
A hectare is a metric unit of area equal to 10,000 square metres. It is the standard unit for measuring agricultural land, forest areas, and large parcels of real estate in metric countries.
Real-world uses
Hectares are the standard unit for agricultural land measurement, forestry management, and urban planning worldwide. Wine regions report vineyard sizes in hectares, and environmental reports quantify habitat loss in hectares. One hectare is roughly the size of two American football fields.
History
The hectare was introduced during the French Revolution as part of the metric system, originally called a "hecto-are" (100 ares). Though not an official SI unit, it is accepted for use with SI and remains the predominant land area unit in global agriculture.
Common mistakes
Confusing hectares with acres—1 hectare is about 2.47 acres, not 1-to-1. Also, some people confuse "hectare" with "hectometre," but a hectare is 10,000 m² (100 m × 100 m), a unit of area, not length.
When is this conversion used?
Converting between acre and hectare is common when working across metric and imperial systems, such as international trade, travel between countries with different measurement standards, or following instructions from a different region.
Worked examples
1 acre = 0.40468564 hectares
1 hectare = 10,000 square metres
How to convert acre to hectare
To convert acre to hectare, multiply the value by 0.40468564.
To convert hectare back to acre, multiply by 2.47105381.
Measurement standards
The square metre is the SI derived unit of area. The hectare (10,000 m²) is accepted for use with the SI by the BIPM, particularly for land measurement, though it is not an SI unit itself.
Did you know?
Vatican City, the world's smallest independent state, covers just 0.44 km² (about 109 acres) — smaller than many golf courses. By contrast, Russia spans over 17.1 million km², nearly 39 million times larger.
| acres | hectares |
|---|---|
| 0.1 | 0.04046856 |
| 0.5 | 0.20234282 |
| 1 | 0.40468564 |
| 2 | 0.80937128 |
| 5 | 2.02342821 |
| 10 | 4.04685642 |
| 25 | 10.11714106 |
| 50 | 20.23428211 |
| 100 | 40.46856422 |
| 250 | 101.17141056 |
| 500 | 202.34282112 |
| 1,000 | 404.68564224 |
Common values
| acres | hectares | |
|---|---|---|
| A4 paper | 0.00001532 acres | 0.0000062 hectares |
| Parking space | 0.00308882 acres | 0.00125 hectares |
| Tennis court | 0.06446238 acres | 0.026087 hectares |
| Football field (soccer) | 1.76433242 acres | 0.714 hectares |
| Central Park, NYC | 842.6293508 acres | 341 hectares |
Frequently asked questions
How many hectares are in 1 acre?
1 acre = 0.40468564 hectares.
How do you convert acre to hectare?
Multiply the acre value by 0.40468564 to get hectare.
What is 10 acres in hectares?
10 acres = 4.04685642 hectares.
How many acres are in 1 hectare?
1 hectare = 2.47105381 acres.