How many hectares are in 1 acres?

1 acres (ac) is exactly 0.404686 hectares (ha).

How do I convert acres to hectares?

Multiply the value in acres by 0.404686 to get the result in hectares. Or use the converter above — type any number and see the result instantly.

Acres (ac) to Hectares (ha) Conversion

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Acres

The acre is a unit of area equal to exactly 4,046.8564224 square metres, the standard unit for land measurement in the United States and United Kingdom. Its origin lies in medieval English agriculture: an acre was the amount of land a yoke of oxen could plough in a single day, standardised as a furlong (220 yards) long and a chain (22 yards) wide — exactly 43,560 square feet. One square mile contains exactly 640 acres.

Hectares

The hectare is a unit of area equal to exactly 10,000 square metres (100 m × 100 m), the standard unit for measuring agricultural land, forest area, and nature reserves internationally. The word derives from the Greek hekaton (hundred) and the French are (100 m²). One hectare is approximately 2.471 acres, and global food production statistics and deforestation rates are almost universally expressed in hectares.

Acres (ac) to Hectares (ha) - Conversion Table
Acres (ac)	Hectares (ha)
0.1 ac	0.040468564224 ha
1 ac	0.40468564224 ha
2 ac	0.80937128448 ha
3 ac	1.21405692672 ha
5 ac	2.0234282112 ha
10 ac	4.0468564224 ha
20 ac	8.0937128448 ha
30 ac	12.1405692672 ha
50 ac	20.234282112 ha
100 ac	40.468564224 ha
1000 ac	404.68564224 ha

Convert Acres (ac) to other units of Area

List of Conversions
‣ Acres (ac) to square meters (m²)
‣ Acres (ac) to square kilometers (km²)
‣ Acres (ac) to square centimeters (cm²)
‣ Acres (ac) to square millimeters (mm²)
‣ Acres (ac) to square feet (ft²)
‣ Acres (ac) to square inches (in²)
‣ Acres (ac) to square yards (yd²)
‣ Acres (ac) to square miles (mi²)
‣ Acres (ac) to hectares (ha)