Acres to Hectares Converter
Use this free calculator to convert land area from acres (ac) to hectares (ha) instantly.
How to Convert Acres to Hectares
Converting acres to hectares is common in agriculture, land development, real estate, and international reporting. The conversion is straightforward once you know the factor:
1 acre = 0.40468564224 hectares
To convert acres to hectares, multiply the number of acres by 0.40468564224.
Formula
Hectares = Acres × 0.40468564224
Example Calculations
- 5 acres = 5 × 0.40468564224 = 2.0234 hectares
- 10 acres = 10 × 0.40468564224 = 4.0469 hectares
- 100 acres = 100 × 0.40468564224 = 40.4686 hectares
Quick Acres to Hectares Table
| Acres | Hectares |
|---|---|
| 1 | 0.404686 |
| 2 | 0.809371 |
| 5 | 2.023428 |
| 10 | 4.046856 |
| 25 | 10.117141 |
| 50 | 20.234282 |
| 100 | 40.468564 |
| 500 | 202.342821 |
Why This Conversion Matters
Acres are commonly used in the United States and a few other countries, while hectares are widely used in international standards and metric-based regions. Accurate conversion helps when:
- Comparing property listings across countries
- Preparing farm reports and grant applications
- Estimating irrigation, fertilizer, and crop yield plans
- Working with GIS mapping and surveying tools
Acres vs Hectares: Key Difference
Acre
An acre is an imperial/customary unit of area. It is often used for plots, farmland, and large properties.
Hectare
A hectare is a metric unit equal to 10,000 square meters, making it convenient for scientific and international land measurements.
Frequently Asked Questions
Can I convert decimal acres?
Yes. This calculator accepts whole numbers and decimals, such as 0.75 acres or 12.38 acres.
How many hectares are in 1 acre?
There are 0.40468564224 hectares in 1 acre.
How many acres are in 1 hectare?
There are about 2.47105 acres in 1 hectare.
Final Tip
For quick estimates, you can multiply acres by 0.405. For precise work (legal, surveying, planning), use the exact conversion factor and a reliable calculator like the one above.