What Is the Acres to Hectares Converter?
This tool converts land area from acres (an imperial/US customary unit) to hectares (a metric unit). It is widely used in agriculture, real estate, surveying, and forestry worldwide. The conversion is universal — it works the same in every country since both units have fixed international definitions.
How to Use It
Enter the area in acres into the input box and the converter instantly returns the equivalent value in hectares, along with the area in square meters for reference. You can enter whole numbers or decimals (for example, 2.5 acres).
The Conversion Formula
The exact relationship is:
$$\text{hectares} = \text{acres} \times 0.40468564224$$
This factor comes from the definition of one international acre as 4,046.8564224 square meters, and one hectare as exactly 10,000 square meters. Dividing gives \(4046.8564224 \div 10000 = 0.40468564224\).
Worked Example
Suppose you have a field of 10 acres. Multiply: $$10 \times 0.40468564224 = 4.0468564224 \text{ hectares},$$ which rounds to about 4.05 ha. That is equivalent to 40,468.56 square meters.
FAQ
How many hectares are in 1 acre? Exactly \(0.40468564224\) hectares, roughly 0.405 ha.
How many acres are in 1 hectare? About \(2.47105\) acres (the inverse of the conversion factor).
Is the acre used here the international acre? Yes. The US survey acre differs by a tiny amount (a few parts per million), so for nearly all practical purposes this converter is accurate.
