Convert Acres to Hectares (ac → ha)
Use our free online acre to hectare converter. Perfect for converting agricultural land, property area, and real estate measurements between imperial and metric systems.
Conversion Formula
ha = ac × 0.404686
To convert acres to hectares, multiply the acre value by 0.404686
Example: To convert 50 acres to hectares: 50 × 0.404686 = 20.23 hectares
Acres to Hectares Conversion Table
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 ac | 0.404686 ha |
| 2 ac | 0.809372 ha |
| 5 ac | 2.02343 ha |
| 10 ac | 4.04686 ha |
| 20 ac | 8.09372 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 200 ac | 80.9372 ha |
| 500 ac | 202.343 ha |
| 1000 ac | 404.686 ha |
| 2000 ac | 809.372 ha |
| 5000 ac | 2023.43 ha |
Quick reference: 1 ac = 0.404686 ha
Understanding the Units
What is an acre?
An acre is a unit of area commonly used in the United States and UK for measuring land. One acre is equal to 43,560 square feet or about 4,047 square meters. Historically, it was defined as the amount of land a yoke of oxen could plow in one day.
What is a hectare?
A hectare is a metric unit of area equal to 10,000 square meters or 2.471 acres. It is commonly used worldwide for measuring land area, particularly in agriculture, forestry, and land management. The hectare is the standard unit for land measurement in most countries.
Frequently Asked Questions
How many hectares are in an acre?
1 acre equals 0.404686 hectares (approximately 0.405 hectares).
How do you convert acres to hectares?
Multiply the number of acres by 0.4047. For example, 50 acres × 0.4047 = 20.23 hectares.
What is 100 acres in hectares?
100 acres equals 40.47 hectares.
Which is bigger, an acre or a hectare?
A hectare is bigger. 1 hectare = 2.471 acres, so 1 acre is about 40% of a hectare.