Convert Acres (ac) to Hectares (ha) | ac in ha

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Let's convert Acres (ac) to Hectares (ha)

This quick and easy calculator will convert Acres (ac) to Hectares (ha) and show formula, brief history on the units and quick maths for the conversion.

Enter Acres to convert to Hectares

Quick Reference for Converting Acres to Hectares

ha = ac / 2.47
Quick Rough Maths
To get the Hectares, divide the number of Acres by 2.5
Acres (ac) in 1 Hectare
There are 2.47 Acres in 1 Hectare
Hectares (ha) in 1 Acre
There are 0.4 Hectares in 1 Acre

Unit Information

Symbol: ac
Unit System: Imperial / US Customary

What is the Acre?

The acre is a unit of area and is used in the imperial and US customary systems with the symbol a.

It represents the area the size of one chain by one furlong (66 by 660 feet). This is exactly equal to 10 square chains, ​1⁄640 of a square mile or 43,560 square feet.

It is generally used to measure the size of land.

Symbol: ha
Unit System: Non-SI Metric

What is the Hectare?

The hectare is a unit of area and is a non-SI but metric unit with the symbol ha.

It represents the area equal to that of a square with edges 100m long (ie 1hm² or 10,000m²). This is the equivalent to about 2.47 acres.

Its size is down to its use primary use; that for measuring the size of land.

Conversion Tables for Acres (ac) to Hectares (ha)