Paver Calculator
Calculate how many paving stones or pavers you need for a patio, walkway, or driveway.
How to use this tool
- Enter the patio dimensions in feet.
- Enter the paver size in inches.
- Add a 10% waste allowance (15% for patterns).
- The calculator returns patio area and total pavers needed.
Estimate the number of pavers needed for your patio, path, or driveway project.
Formula
Patio area = length × width (ft²)
Paver area = (paver_length ÷ 12) × (paver_width ÷ 12) (ft²)
Pavers needed = ⌈(patio_area ÷ paver_area) × (1 + waste% ÷ 100)⌉
How it works
The calculator finds the total patio area in square feet, then divides by the area of a single paver (converted from inches to feet) to get the theoretical count. A waste percentage is applied before rounding up to a whole number to account for cuts at the edges, breakage during installation, and future repairs.
This method assumes a rectangular patio and uniform paver size with no gaps or mortar joints included in the paver dimensions; if pavers are to be laid with sand joints, the joint width is typically small enough that its effect on count is negligible.
Worked example
Worked example
- Patio area = 16 × 12 = 192 ft².
- Paver area = (12 ÷ 12) × (6 ÷ 12) = 1.0 × 0.5 = 0.5 ft² per paver.
- Base count = 192 ÷ 0.5 = 384 pavers.
- With 10% waste: 384 × 1.10 = 422.4, rounded up to 423 pavers.
Pavers needed: 423
Key terms
- Paver
- A pre-made unit of brick, concrete, or natural stone used to surface outdoor areas such as patios, walkways, and driveways.
- Waste allowance
- Extra pavers ordered beyond the theoretical count to cover cuts at edges, breakage during cutting or laying, and replacements needed in future repairs.
- Bond pattern
- The arrangement in which pavers are laid — running bond, herringbone, or basketweave. Diagonal or herringbone patterns increase waste because more edge cuts are needed.
- Base course
- The compacted gravel and sand sub-base beneath pavers that provides drainage and stability. Not included in paver quantity but essential to the installation.
- Paver density
- The number of pavers per square foot, equal to 1 ÷ paver area. Useful for quick mental checks when ordering.
Frequently asked questions
- How many pavers do I need for a patio?
- Divide the patio area (ft²) by the area of one paver (ft²), then add 10% for waste. For example, a 192 ft² patio using 12×6 inch pavers needs about 423 pieces.
- What size base do I need under pavers?
- Lay a 4–6 inch compacted gravel base, then a 1-inch sand screed layer. This provides drainage and a level surface for paver installation.