Converting units of area
The calculator converts standard units of area to a precision of up to two decimal points:
 millimeters squared (mm^{2}),
 centimeters squared (cm^{2}),
 decimeters squared (dm^{2}),
 meters squared (m^{2}),
 ares (a),
 hectares (ha)
 kilometers squared(km^{2}) .
Conversions therefore work from for example area to metres squared, kilometers squared to hectares or decimeters squared to centimeters squared.
Converting units of area
You need to input these three values into the calculator:

Area that you want to convert

The unit from which you want to convert

The unit to which you want to convert
Explanation of conversions
In the table you can see how the individual unit conversions work.
From every standard unit to the nearest smaller and larger unit.
Table of standard units of area  
1 km^{2}  =  100 ha 
1 he

=

100 a

1 a

=

100 m^{2}

1 m^{2}

=

100 dm^{2}

1 dm^{2}

=

100 cm^{2}

1 cm^{2}

=

100 mm^{2} 
1 mm^{2 }

=

0.01 cm^{2 }

1 cm^{2} 
=

0.01 dm^{2} 
1 dm^{2} 
=

0.01 m^{2} 
1 m^{2}

=

0.01 a

1 a

=

0.01ha

1 he

=

0.01 km^{2 }

Converting units of area questions and answers
When are hectares used?
Hectares are primarily used for the area of land. 1 hectare is 0.01 kilometers squared.
How does the metric length system work?
The metric mass system is based on magnitude so the difference between centimeters squared, meters squared and kilometers squared is some power of 10.