Acreage Calculator
Calculate acreage from square feet, square meters, hectares, or square miles. Visual area bar, real-world comparisons, square-side dimension, and conversion factors table.
Acres to Hectares Converter
Convert acres to hectares and hectares to acres. Visual scale comparison, quick conversion table, square-side dimensions, and real-world size comparisons.
Acres⧉
10.0000
1 acre = 43,560 ft²
Hectares⧉
4.0469
1 ha = 10,000 m²
Square Feet⧉
435,600
Imperial
Square Meters⧉
40,469
Metric
Square Miles⧉
0.015625
640 acres = 1 mi²
Square Kilometers⧉
0.0405
100 ha = 1 km²
If Square (ft)⧉
660.0 × 660.0 ft
Side ≈ 660.0 ft
If Square (m)⧉
201.2 × 201.2 m
Side ≈ 201.2 m
Acre vs. Hectare Scale
1 Acre
1 Ha
1 hectare = 2.471 acres. A hectare is about 2.5× larger than an acre.
Quick Conversion Table
| Acres | Hectares | ft² | m² |
|---|---|---|---|
| 0.25 | 0.1012 | 10,890 | 1,012 |
| 0.50 | 0.2023 | 21,780 | 2,023 |
| 1.00 | 0.4047 | 43,560 | 4,047 |
| 2.00 | 0.8094 | 87,120 | 8,094 |
| 5.00 | 2.0234 | 217,800 | 20,234 |
| 10.00 | 4.0469 | 435,600 | 40,469 |
| 25.00 | 10.1172 | 1,089,000 | 101,172 |
| 50.00 | 20.2343 | 2,178,000 | 202,343 |
| 100.00 | 40.4686 | 4,356,000 | 404,686 |
| 640.00 | 258.9990 | 27,878,400 | 2,589,990 |
Planning notes, formulas, and examples
About the Acres to Hectares Converter
Acres and hectares are the two most common large-area measurement units in the world. The acre dominates in the United States, United Kingdom, and several other countries, while the hectare is the global metric standard used in agriculture, land management, and international real estate.
It gives instant bidirectional conversion between acres and hectares, with results shown in six related units: acres, hectares, square feet, square meters, square miles, and square kilometers. The visual scale comparison illustrates that one hectare is about 2.47 times larger than one acre, making the relationship tangible.
A quick conversion table covers common values from quarter-acre lots to full sections (640 acres), and the size comparisons section puts your measurement alongside familiar landmarks — from tennis courts to Central Park. Real estate professionals, international buyers, farmers, and students all benefit from having precise, contextual conversion at their fingertips. It also reduces reporting mistakes when project documents switch between metric and imperial land units.
When This Page Helps
The acres-to-hectares conversion factor (2.471) is not intuitive. This converter does the math, provides both imperial and metric results, and contextualizes the area with real-world comparisons. Essential for international real estate, agriculture, and cross-border land transactions where clear, consistent records are critical for contracts, valuation, planning approvals, and compliance reporting.
How to Use the Inputs
- Select Acres → Hectares or Hectares → Acres.
- Enter the area value.
- View results in six units simultaneously.
- Compare the visual scale bar showing the acre-to-hectare ratio.
- Reference the Quick Conversion Table for common values.
- Expand Size Comparisons for landmark equivalents.
Formula used
Acres to Hectares: ha = acres × 0.404686
Hectares to Acres: acres = ha × 2.47105
1 acre = 43,560 ft² = 4,046.86 m²
1 hectare = 10,000 m² = 107,639 ft²Example Calculation
Result: 4.047 hectares
10 acres × 0.404686 = 4.04686 hectares. In square feet: 10 × 43,560 = 435,600 ft². In square meters: 4.047 × 10,000 = 40,469 m². If square-shaped, the lot would be about 660 ft × 660 ft or 201 × 201 m.
Tips & Best Practices
- Quick estimate: multiply acres by 0.4 for a rough hectare count (exact factor is 0.4047).
- Or: divide hectares by 2.5 for approximate acres (exact: divide by 2.471).
- 1 section of land (640 acres) = 259 hectares ≈ 2.59 km².
- The median US farm is about 445 acres (180 ha).
- In metric countries, land prices are quoted per hectare. In the US, per acre.
- Timber land is often measured in acres (US) or hectares (international).
Why Both Systems Persist
The acre predates the metric system by centuries. Deeply embedded in US property law, land records, and agricultural policy, it resists metrication. The hectare, adopted internationally, is preferred for its simplicity (1 ha = 10,000 m²). International trade and real estate increasingly require fluency in both.
Agriculture and Farming
Farm sizes are quoted in acres (US) or hectares (global). Crop yields are often measured in bushels per acre or tonnes per hectare. Converting between these is essential for international commodity markets. USDA data uses acres; FAO data uses hectares.
Real Estate Implications
Most US property deeds record area in acres or square feet. International luxury markets often list in hectares. Cross-border buyers need precise conversion to compare properties in different countries and negotiate accurately.
Sources & Methodology
Last updated:
Frequently Asked Questions
1 hectare = 2.47105 acres. A hectare is roughly 2.5 times the size of an acre.
1 acre = 0.404686 hectares. An acre is about 40% of a hectare.
A hectare is bigger — roughly 2.47× the area of an acre. One hectare = 10,000 m² = 107,639 ft². One acre = 43,560 ft² = 4,047 m².
Acres are part of the imperial system used historically in the US, UK, and former colonies. Hectares are metric (part of SI). Most countries adopted metric for land measurement in the 19th-20th centuries. The US still primarily uses acres for real estate and agriculture.
Multiply hectares by 2.47105 to get acres. Example: a 5 ha property = 12.36 acres. Many international real estate sites list both units.
They are the same thing. A hectare (ha) is defined as 1 square hectometer (hm²) = 100 m × 100 m = 10,000 m².
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