Area length × Area width = Total area
The calculator multiplies the area's length by its width to get the total surface that needs paving.
Paver length × Paver width = Paver area
The same calculation is done for a single paver. Paver dimensions are entered in inches (imperial) or centimeters (metric) and converted to match the area units.
Total area ÷ Paver area = Pavers required
Dividing the total area by the paver area gives the base number of pavers. The result is rounded up to the nearest whole paver, then increased by the waste percentage.