Paver Calculator
Enter your patio dimensions, paver size, and a waste allowance to estimate how many pavers you need.
How paver quantities are estimated
This calculator divides your patio's total area by the area of a single paver to find the base count, then adds a waste allowance on top to account for cuts along edges, breakage during handling, and pattern-related offcuts.
A 10% waste allowance is a common starting point for a simple running-bond layout; more complex patterns (like herringbone or basket weave) or patios with lots of curves and borders often need a higher allowance, sometimes 15% or more.
Frequently asked questions
Why do I need extra pavers beyond the exact area calculation?
Pavers along the edges of your patio usually need to be cut to fit, and those cut pieces often can't be reused — plus some pavers break or chip during handling and installation. The waste allowance accounts for this.
How much waste allowance should I use?
10% is typical for a straightforward rectangular layout. Increase it to 15% or higher for complex patterns, curved edges, or patios with many borders or cutouts, since these increase the proportion of pavers that need cutting.
Does this account for the gaps between pavers?
No — this calculates based on the paver's own dimensions. If your installation uses wide joints filled with sand or gravel, your actual paver count may be slightly lower than this estimate since each paver effectively covers a bit more ground including its joint.