Template:Unit area density/doc

This template displays area density measurement units used within various Category:Geobox templates, automatically converting between metric/imperial values. The input must be unformatted numeric values (i.e. without commas, the commas are automatically added to the output).

It can display and convert following units:
 * /m2 to /sq ft (/square metre to /square foot) and vice-versa
 * /ha to /acre (/hectare to /acre) and vice-versa
 * /km2 to /sq mi (/square kilometre to /square mile) and vice-versa

Usage
The template has 3 unnamed parameters:. Their meaning is as follows:
 * 1) unit … obligatory, unit  of the   parameter, it will get displayed first
 * 2) value … obligatory, numerical value
 * 3) round … mandatory, number of decimal digits (negative numbers can be used for rounded figures); if not specified 0 is assumed