Hectare to Acre Converter
What is a Hectare?
A hectare (ha) is a metric unit of area equal to 10,000 square meters (m²), defined as a square measuring 100 meters on each side. The International Bureau of Weights and Measures (BIPM) recognizes the hectare as a unit accepted for use with the International System of Units (SI).
Hectares are the standard land measurement unit in most countries, including India, the European Union, Australia, Brazil, and China. Agricultural land, national parks, and large real estate properties are measured in hectares.
What is an Acre?
An acre (ac) is an imperial unit of area equal to 43,560 square feet (ft²) or 4,046.8564224 square meters (m²). The National Institute of Standards and Technology (NIST) defines the acre as part of United States customary units.
Acres are the primary land measurement unit in the United States and United Kingdom. The acre originates from the English surveying system, where 1 acre equals 1 chain (66 ft) × 1 furlong (660 ft) = 10 square chains.
Hectare to Acre Formula
The hectare to acre formula is: Acres = Hectares × 2.47105381. This factor equals 10,000 ÷ 4,046.8564224.
The reverse formula: Hectares = Acres ÷ 2.47105381.
=A1*2.47105381How to Convert Hectare to Acre
Step 1: Note the hectare value
Write down the hectare measurement. Example: 5 hectares.
Hectare to Acre Conversion Table
Reference table with 18 common hectare values converted to acre. Type a custom value for instant conversion.
| Hectare (ha) | Acre (ac) |
|---|---|
| 0.1 | 0.24711 |
| 0.25 | 0.61776 |
| 0.5 | 1.23553 |
| 1 | 2.47105 |
| 2 | 4.94211 |
| 3 | 7.41316 |
| 5 | 12.35527 |
| 7.5 | 18.5329 |
| 10 | 24.71054 |
| 15 | 37.06581 |
| 20 | 49.42108 |
| 25 | 61.77635 |
| 50 | 123.55269 |
| 75 | 185.32904 |
| 100 | 247.10538 |
| 250 | 617.76345 |
| 500 | 1,235.5269 |
| 1,000 | 2,471.05381 |
Conversion factor: 1 ha = 2.47105381 ac
Hectare to Acre Worked Examples
6 worked examples showing hectare to acre conversion for real-world land scenarios.
Convert 0.4 Hectares to Acre
Small residential plot in India
Frequently Asked Questions
5 common questions about hectare to acre conversion.
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