The Acres to Hectares Converter instantly converts land area from acres to hectares. One acre equals exactly 0.40469 hectares — the standard conversion used in agriculture, real estate, and land surveying when translating US customary measurements to the international metric system.
4.0469
ha
0.040469
km²
4.0469
ha
0.040469
km²
The calculator for acres to hectares conversion translates land area measurements between the acre — the standard unit of land area in the United States, United Kingdom, and several Commonwealth countries — and the hectare, the SI-compatible unit used in agriculture, forestry, and land administration worldwide. One acre equals exactly 0.40468564224 hectares by international definition.
The conversion between acres and hectares is derived from the international definitions of the yard and the meter:
1 acre = 4,840 square yards = 43,560 square feet = 4,046.8564 m² = 0.40469 hectares
1 hectare = 10,000 m² = 2.47105 acres
Both directions are exact within the precision of the international foot definition (1 foot = 0.3048 m exactly). The acres to square feet converter and hectares to acres converter handle the complementary conversions within this unit family.
The acre originated as the area a yoke of oxen could plough in a single day — historically 40 rods long by 4 rods wide (1 rod = 16.5 feet). The modern statutory acre was standardized at 43,560 square feet by the British Weights and Measures Act. Today the acre remains the standard land area unit in:
Golf courses typically cover 100–200 acres; a standard American football field (including end zones) is approximately 1.32 acres; a city block in Manhattan averages roughly 5 acres.
The hectare (ha) equals 10,000 square meters — a square 100 meters on each side. It is the unit of choice in international agriculture, forestry, and environmental science. The FAO reports all global agricultural statistics in hectares; EU agricultural subsidies are calculated per hectare; satellite-derived land cover maps use hectares as the standard area unit. One hectare is approximately 2.47 acres, making it slightly larger than two and a half football fields. Use this online calculator for instant bidirectional conversion. The area conversion calculator and area converters category cover all standard area unit combinations.
Building intuition for these units helps interpret agricultural reports and property listings:
The conversion applies the squared linear conversion factor. acre to hectare conversion. Area = length × width, so the conversion factor for area is the square of the length conversion factor.
For real estate, note that property areas are typically measured in square feet (US) or square meters (international). For land and agriculture, acres (US) and hectares (international) are standard. Always verify which unit is being used in property listings and legal documents.
Inputs
Results
Default value.
Inputs
Results
10x larger area.
The formula is: acre to hectare conversion.
Area conversions use the square of the linear conversion factor. For example, 1 m = 3.28 ft, but 1 m² = 10.76 ft² (3.28²).
Square feet in the US and UK, square meters internationally. Larger properties use acres or hectares.
An acre = 43,560 ft² = 4,047 m² ≈ 0.405 hectares. It's roughly the size of a football field (minus the end zones).
A hectare = 10,000 m² = 2.471 acres ≈ 107,639 ft². About the size of 2.5 football fields.
Yes, all conversion factors use exact international definitions.
Multiply length × width in the same unit. Then convert the area using this tool if needed.
1 km² = 1,000,000 m² = 0.3861 mi² = 247.1 acres. Used for geographic areas.
Results are accurate to floating-point precision (15-16 significant digits).
No, this converter handles area (2D) units only. For volume, cube the linear conversion factor.
How helpful was this calculator?
5.0/5 (1 rating)
