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Hectares to Acres (ha to ac) Converter – Area Conversion Tool

Convert hectares to acres and acres to hectares. Free online area converter tool for agricultural land, real estate, and more.
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Hectares to Acres (ha to ac) – Instant Calculator

Hectares (ha)

ha
⇄
Convert

Acres (ac)

ac

Common Conversions

1 ha = 2.47105 ac
1 ha = 2.47105 ac
5 ha = 12.35525 ac
5 ha = 12.35525 ac
10 ha = 24.7105 ac
10 ha = 24.7105 ac
25 ha = 61.77625 ac
25 ha = 61.77625 ac
50 ha = 123.5525 ac
50 ha = 123.5525 ac
100 ha = 247.105 ac
100 ha = 247.105 ac
250 ha = 617.7625 ac
250 ha = 617.7625 ac
500 ha = 1235.525 ac
500 ha = 1235.525 ac

About Hectares to Acres Conversion

Hectares to acres conversion is essential for international agriculture, land sales, and environmental planning. Hectares (ha) are used in most countries for large land areas, while acres (ac) are common in the US, UK, and a few other regions. Our converter provides instant, accurate results for both directions.

Popular Area Conversions

  • Hectares to Acres: 1 ha = 2.47105 ac
  • Acres to Hectares: 1 ac = 0.404685642 ha
  • 10 Hectares: 10 ha = 24.7105 ac
  • 100 Hectares: 100 ha = 247.105 ac

Hectares to Acres: Definition, History, Uses, and Examples

Definition

Hectares (ha) and Acres (ac) are both units of area measurement for land. 1 hectare is exactly 10,000 square meters, while 1 acre is defined as 4,046.8564224 square meters. The conversion factor is 1 ha = 2.47105 ac.

Origin or History

The hectare is a metric unit introduced in 1795 in France, designed for easy decimal-based calculations. The acre is an older imperial unit, historically based on the area a yoke of oxen could plow in a day. Today, both are standardized for international use.

Current Use

  • Agriculture & farming: Land area for crops, fields, and pastures.
  • Land sales & real estate: International property listings and transactions.
  • Environmental planning: Conservation, forestry, and land management.
  • Legal & registry: Land deeds, zoning, and government records.

Examples and Quick Answers

QueryAnswerNotes
How many acres in 20 ha?49.421 ac20 × 2.47105
50 ha to ac123.5525 ac50 × 2.47105
100 ac to ha40.4686 ha100 ÷ 2.47105
1 ha in ac2.47105 acExact conversion
500 ha to ac1235.525 ac500 × 2.47105
1000 ac to ha404.686 ha1000 ÷ 2.47105

Step-by-step example

Convert 15 ha to ac: 15 × 2.47105 = 37.06575 ac. For the reverse, divide acres by 2.47105 to get hectares.

Frequently Asked Questions

What is the formula to convert hectares to acres?
Multiply by 2.47105. Exact definition: 1 hectare = 2.47105 acres. Example: 10 ha × 2.47105 = 24.7105 ac.
How do I convert acres to hectares?
Divide by 2.47105 (or multiply by 0.404685642). Example: 50 ac ÷ 2.47105 ≈ 20.2343 ha.
Why is hectares to acres conversion important in agriculture?
Many countries use hectares for land measurement, but international trade and real estate often require acres. Converting ensures accurate land valuation and compliance with local standards.
Is the converter accurate for legal and registry documents?
Yes. The converter uses the exact international conversion factor (1 ha = 2.47105 ac), suitable for legal, agricultural, and real estate documentation.
Can I use this tool for environmental planning and land management?
Absolutely! The tool is ideal for conservation, forestry, and land management projects where both metric and imperial units are needed.

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