Acres to Hectares Converter
Convert acres to hectares instantly. Free online ac to ha calculator—multiply by 0.404686. For farmland and property surveys.
How to Convert Acre to Hectare
To convert acres to hectares, multiply the number of acres by 0.40468564224. One acre equals approximately 0.4047 hectares, making this conversion essential for agricultural and international land measurements.
Conversion Formula:
value * 0.40468564224Conversion Examples
Example: 1 acre to hectares
- 1 × 0.404686 ≈ 0.405 ha
1 acre ≈ 0.405 hectares
Standard land conversion.
Example: 10 acres to hectares
- 10 × 0.404686 ≈ 4.047 ha
10 acres ≈ 4.05 hectares
Small farm plot.
Conversion Chart
| Acre | Hectare |
|---|---|
| 1 | 0.405 |
| 2 | 0.809 |
| 5 | 2.023 |
| 10 | 4.047 |
| 20 | 8.094 |
| 25 | 10.117 |
| 50 | 20.234 |
| 100 | 40.469 |
| 250 | 101.171 |
| 500 | 202.343 |
Conversion Formula
The formula to convert acres to hectares is:
acres × 0.40468564224 = hectares
Mathematically, you can write this as:
acres × 0.40468564224 hectares/acre = hectares
Multiplying by 0.40468564224 converts acres to hectares using the standard international conversion factor.
Quick Conversion Tip
Quick conversion: Multiply acres by 0.405 (approximately) to get hectares. For example, 1 acre ≈ 0.405 hectares, 10 acres ≈ 4.05 hectares, 100 acres ≈ 40.5 hectares.
Unit Definitions
Acre (ac)
An acre is an imperial unit of area equal to 4,840 square yards or 43,560 square feet. It is commonly used in the United States and United Kingdom for measuring land area, especially in real estate and agriculture.
1 acre = 4,046.8564224 square meters = 43,560 square feet = 4,840 square yards = 0.40468564224 hectares
Hectare (ha)
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 large land areas, especially in agriculture and forestry.
1 hectare = 10,000 square meters = 2.47105 acres = 0.01 square kilometers
Common Use Cases
- Farm and ranch listings abroad.
- Government land records in hectares.
- Forestry and conservation planning.
- Comparing US acre pricing to metric plots.
Understanding the Conversion
Acres to hectares: 1 acre = 0.404686 hectares. US/UK land often in acres; metric countries use hectares.
5 acres ≈ 2.02 hectares.
Farm and ranch listings abroad. The table and FAQ on this page walk through the factor if you need it.
FAQs
How many hectares in an acre?
About 0.4047 hectares per acre.
How do I convert acres to hectares?
Multiply acres by 0.404686.
Is a hectare bigger than an acre?
Yes—1 ha ≈ 2.47 acres.