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Hectares to Ares Converter

Convert hectares (ha) to ares (a), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an area, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
100 a
square miles
0.00386102158542 sq mi
acres
2.47105381467 ac
square yards
11,959.900463 sq yd
square feet
107,639.104167 sq ft
square inches
15,500,031.0001 sq in
square kilometers
0.01 km²
square meters
10,000 m²
square centimeters
100,000,000 cm²
square millimeters
10,000,000,000 mm²
square micrometers
1 × 10¹⁶ µm²

1 ha = 100 a

Show the working
  1. 1 ha = 100 a
  2. 1 × 100 = 100 a

How to convert hectares to ares

1 ha = 100 a, so multiply by 100 to go from hectares to ares. Going the other way, 1 a = 0.01 ha.

a = ha × 100
ha = a × 0.01

Worked example:

1 ha = 100 a
5 × 100 = 500 a

Hectares to ares table

HectaresAres
1 ha100 a
2 ha200 a
3 ha300 a
4 ha400 a
5 ha500 a
6 ha600 a
7 ha700 a
8 ha800 a
9 ha900 a
10 ha1,000 a
15 ha1,500 a
20 ha2,000 a
25 ha2,500 a
30 ha3,000 a
40 ha4,000 a
50 ha5,000 a
75 ha7,500 a
100 ha10,000 a
250 ha25,000 a
500 ha50,000 a
1000 ha100,000 a

About the units

Hectares (ha)
Hectares, a metric unit. Definition: BIPM SI Brochure (non-SI unit accepted for use with the SI).

Formula version 0.1.0Reviewed