Paver Calculator
Pavers = paved area ÷ the face area of one paver, plus an allowance for edge cuts. One 8 × 4 in paver covers 0.222 ft², so a 20 × 15 ft patio needs 1,350 pavers, or 1,418 with 5% waste. The base and bedding layer are separate: see the Paver Sand Calculator.
How it's calculated: Pavers = (area length × area width) ÷ (paver length × paver width), plus the waste allowance, rounded up.
Result appears here
Fill in the fields and press Calculate.
Formula, calculation, assumptions and sources
Pavers = Paved area ÷ (paver length × paver width), plus a waste allowance
Run the calculation to see each step with your own numbers.
A 20 ft × 15 ft patio with 8 × 4 in pavers, 5% waste.
Area = 300 ft²; one paver = 0.222 ft²
Pavers = 300 ÷ 0.222 = 1,350 → order 1,418 with 5%
- Rectangular area. For a curved or irregular patio, use the largest rectangle plus separate pieces.
- Joint sand between pavers is not deducted — it's a small fraction and the waste allowance covers it.
- The compacted base and bedding sand are separate (Road Base and Paver Sand calculators).
- Do pavers come by the piece or the pallet?
- Usually by the pallet, priced per ft². A pallet of 8×4 pavers covers roughly 100–120 ft². The calculator gives you the piece count and the area so you can convert to pallets.
- Should I add for the joints between pavers?
- No — the sand-filled joint is a small fraction of the area and the waste allowance covers it. Adding it separately would over-order.
- What goes under the pavers?
- A compacted crushed-stone base (Road Base Calculator) topped with about an inch of screeded bedding sand (Paver Sand Calculator). This calculator covers only the pavers themselves.
- How many pavers do I need for a 10×10 patio?
- 450 pavers of 8 × 4 in for the 100 ft² exactly, or 473 with the default 5% allowance for edge cuts and breakage. Herringbone patterns, curves and circles waste more.
- How many 8×4 pavers cover a square foot?
- 4.5: one 8 × 4 in paver has a face of 32 in², and a square foot is 144 in². Multiply your area by 4.5, then add the cut allowance.
Area division
Standard geometry. Unit conversions per NIST SP 811.
Waste allowance
ICPI Tech Spec / paver-manufacturer estimating guidance.
About the Paver Calculator
The Paver Calculator gives the number of pavers for a patio, walkway or driveway from the area and the individual paver size, plus a waste allowance for edge cuts. A straight-edged rectangle in running bond wastes little; a herringbone pattern, a curved edge or a circle kit wastes more. The compacted base and the bedding sand under the pavers are separate — see the Road Base and Paver Sand calculators.
What you enter
- Area length
- Area width
- Paver length
- Paver width
- Waste allowance — 5% for a running-bond rectangle; 10%+ for a herringbone, a curved edge or a circle kit.
What you get back
- Paved area — the exact result of the calculation.
- Pavers needed — shown as the exact figure and, separately, a recommended figure with your waste allowance added.
The formula, a worked example, the assumptions behind it and the sources are shown in full below the calculator.
Related calculators
- Paver Sand Calculator — Bedding sand for a paver installation.
- Road Base Calculator — Road base / crusher-run quantity for a sub-base layer.
- Tile Calculator — Tiles and boxes needed for a floor or wall, including an allowance for cuts.
- Brick Calculator — Number of bricks for a wall of a given area and brick size.
Part of the Tile & Flooring calculators.