Construction & Materials · Verified formula
Paver Calculator
Find how many pavers you need for a patio or walkway, including waste allowance.
Formula verified
3+ known-answer test cases
Last verified August 2026
Result
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How to use the Paver Calculator
- Enter your project length and width in feet.
- Enter the paver size in inches and your planned joint width.
- Set a waste allowance — 5-10% for simple layouts, 15%+ for patterns or curves.
- Optionally enter a base depth to estimate base material volume.
- Select Calculate to see the waste-adjusted paver count.
Formula
Paver count
Pavers = project area ÷ paver face area, adjusted by the selected waste factor
Worked example
Verified example
QA passed
Project: 10 ft × 10 ft = 100 ft² Paver: 12 in × 12 in, joint width 0 in for this example Paver face area = 1 ft² each Pavers (no waste) = 100 ÷ 1 = 100 With 10% waste = ceil(100 × 1.10) = 110 Result: 110 pavers
Why this matters: Pavers are usually sold in fixed pallet quantities from a single production run, so an undercount that forces a reorder can mean a slightly mismatched dye lot on the new batch.
Common mistakes
- Leaving out the joint width, which changes the effective footprint of each paver and shifts the count.
- Underestimating waste on cut patterns, curved edges or diagonal layouts, which need more than a straight rectangular layout.
- Calculating the paver count and the base-layer material as if they were the same line item, rather than two separate calculations.
Frequently asked questions
How much waste should I add for pavers?
A straightforward rectangular layout typically needs 5-10% extra; complex patterns or curved edges often need 15% or more.
How deep should the base be under pavers?
A typical patio base is 4-6 inches of compacted gravel plus a 1-inch bedding layer of sand, though frost depth requirements vary by region.
Does joint width affect how many pavers I need?
Yes, slightly. Wider joints reduce the number of pavers needed to fill a given area since each paver plus its joint takes up more space.
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