Unit Converter
Acres to Hectares Converter
Convert acres to hectares instantly. 1 ac = 0.404686 ha. Free online converter with exact formula and full table.
Hectares
0.404686 ha
1 ac = 0.404686 ha
Acres to Hectares formula
ha = ac × 0.404686Acres and hectares both measure land area. One acre (imperial/US) equals 0.404686 hectares (metric). The hectare, used worldwide for property and agriculture, is 10,000 m². Acres are common in English-speaking countries. The conversion factor bridges imperial and metric systems.
Acres to Hectares conversion table
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 ac | 0.404686 ha |
| 2 ac | 0.809371 ha |
| 5 ac | 2.0234 ha |
| 10 ac | 4.0469 ha |
| 25 ac | 10.1171 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 250 ac | 101.17 ha |
| 500 ac | 202.34 ha |
| 1000 ac | 404.69 ha |
When you need to convert acres to hectares
- Comparing real estate property sizes across countries (UK/US listings vs European market)
- Converting farm or agricultural land area for compliance reports or international sales
- Checking building lot sizes when relocating or investing in land abroad
- Understanding national park or conservation area sizes in different measurement systems
- Calculating solar farm or renewable energy project land requirements for global tenders
Frequently asked questions
Why is the conversion 0.404686 and not a round number?
Because the acre is defined as exactly 4,046.8564224 square metres, a fixed imperial-metric relationship. Dividing by 10,000 (the hectare) gives the precise decimal factor. Rounding would lose accuracy in large land transactions.
Which measurement is used more internationally?
Hectares dominate globally in agriculture, real estate, and official land records because the metric system is standard. Acres remain primary in the United States, UK, India, and some Commonwealth nations for legal and practical purposes.
Can I convert back from hectares to acres?
Yes, divide hectares by 0.404686 or multiply by 2.47105. The converter works both directions. This page also shows the complete conversion table for quick reference.