🧱 Paver Calculator
By ToolNimba Editorial Team · Updated 2026-06-19
Assumes a uniform rectangular layout with tight joints and no joint gap, so the figure is slightly conservative for sand-set pavers with spacing. Counts are rounded up to whole pavers. Order the waste allowance to cover cuts, breakage and a few spares for future repairs.
This paver calculator works out how many pavers you need to cover a patio, walkway or driveway. Enter the patio length and width in feet, the size of one paver in inches, and a waste allowance for cuts and breakage. You will instantly see the total paver count, the patio area, and how many pavers fit in each square foot, so you can order the right amount in one trip.
What is the Paver Calculator?
The number of pavers for any project comes down to two areas: the area you want to cover and the area one paver covers. Work in consistent units and the rest is simple division. Patio size is usually given in feet, while pavers are sold by their face size in inches, so the trick is converting between the two. One square foot is 144 square inches (12 inches by 12 inches), so the number of pavers that fit in a square foot is 144 divided by the paver face area in square inches. A standard 12 by 12 inch paver covers exactly one square foot, while a smaller 6 by 6 inch paver (36 square inches) takes four to fill the same space.
Multiply your patio area in square feet by the pavers per square foot and you have the bare minimum count. In the real world you always order more than that. Pavers along the edges of a patio almost never line up to a whole unit, so you cut them, and every cut produces an offcut you often cannot reuse. Pavers also crack in transit and during installation, and a handful of matching spares is worth keeping for future repairs since dye lots change between production runs. A waste allowance of 5 to 10 percent covers a simple rectangular layout, while 10 to 15 percent or more is sensible for diagonal, herringbone or curved patterns that need many angled cuts.
This calculator assumes tight joints with no gap between pavers, which keeps the estimate on the conservative side. Sand-set and permeable systems leave a small joint (often a few millimetres) that very slightly reduces the count, and that slack is comfortably absorbed by the waste allowance. For odd-shaped areas, break the space into rectangles, calculate each one, and add the results together before applying waste.
When to use it
- Estimating how many pavers to buy for a new patio, path or driveway before a trip to the supplier.
- Comparing two paver sizes to see how the count and the look of the surface change.
- Budgeting a hardscaping project by turning a paver count into a cost once you know the price per unit.
- Adding the right number of spare pavers for future repairs without over-ordering.
How to use the Paver Calculator
- Enter the patio length and width in feet.
- Enter the size of one paver: its length and width in inches.
- Set a waste allowance percentage for cuts, breakage and spares.
- Read off the total pavers needed, the patio area, and the pavers per square foot.
Formula & method
Worked examples
A 20 ft by 10 ft patio using 12 by 12 inch pavers, with a 10% waste allowance.
- Patio area = 20 × 10 = 200 sq ft
- Paver face area = 12 × 12 = 144 sq in
- Pavers per sq ft = 144 ÷ 144 = 1
- Base count = 200 × 1 = 200 pavers
- With 10% waste = 200 × 1.10 = 220 pavers
Result: 220 pavers (200 before waste)
A 12 ft by 12 ft patio using 4 by 8 inch brick pavers, with a 10% waste allowance.
- Patio area = 12 × 12 = 144 sq ft
- Paver face area = 4 × 8 = 32 sq in
- Pavers per sq ft = 144 ÷ 32 = 4.5
- Base count = 144 × 4.5 = 648 pavers
- With 10% waste = 648 × 1.10 = 712.8, rounded up to 713 pavers
Result: 713 pavers (648 before waste)
Pavers per square foot by common paver face size (no joint gap)
| Paver size (inches) | Face area (sq in) | Pavers per sq ft |
|---|---|---|
| 4 × 8 | 32 | 4.5 |
| 6 × 6 | 36 | 4.0 |
| 6 × 9 | 54 | 2.67 |
| 8 × 8 | 64 | 2.25 |
| 12 × 12 | 144 | 1.0 |
| 16 × 16 | 256 | 0.56 |
| 24 × 24 | 576 | 0.25 |
Suggested waste allowance by layout pattern
| Pattern | Cutting involved | Suggested waste |
|---|---|---|
| Straight or running bond | Edge cuts only | 5% to 10% |
| Basketweave or stack bond | Edge cuts only | 5% to 10% |
| Diagonal or 45 degree | Many angled cuts | 10% to 15% |
| Herringbone | Many angled cuts | 10% to 15% |
| Circular or curved | Heavy cutting | 15% or more |
Common mistakes to avoid
- Mixing up feet and inches. Patio dimensions are usually in feet while pavers are sized in inches. Multiplying them without converting gives a wildly wrong count. This calculator handles the conversion using 144 square inches per square foot.
- Ordering exactly the bare minimum. The base count assumes perfect cuts and zero breakage, which never happens. Always add a waste allowance so you are not left a few pavers short with the supplier out of your dye lot.
- Using too small a waste allowance for complex patterns. Herringbone, diagonal and curved layouts need many angled cuts that waste material. A 5% allowance suited to a straight layout can leave you short, so use 10% to 15% or more for these patterns.
- Forgetting spares for future repairs. Pavers crack over time and dye lots change between production runs, so a matching replacement may be impossible later. Keep a small stock of the same batch on hand by including it in the waste allowance.
Glossary
- Paver
- A precast concrete, brick or stone unit laid in a pattern to form a hard surface such as a patio, path or driveway.
- Face area
- The top surface area of a single paver, found by multiplying its length by its width.
- Pavers per square foot
- How many pavers cover one square foot, equal to 144 divided by the paver face area in square inches.
- Waste allowance
- Extra material added to the order to cover cuts, breakage and spare units, expressed as a percentage of the base count.
- Joint
- The gap between adjacent pavers, often filled with sand. A wider joint very slightly reduces the number of pavers needed.
Frequently asked questions
How many pavers do I need for a patio?
Multiply the patio area in square feet by the number of pavers that fit in a square foot, which is 144 divided by the paver face area in square inches, then add a waste allowance. For a 200 square foot patio with 12 by 12 inch pavers and 10% waste, that is 200 × 1 × 1.10 = 220 pavers.
How many 12x12 pavers are in a square foot?
Exactly one. A 12 by 12 inch paver has a face area of 144 square inches, and one square foot is also 144 square inches, so a single 12 by 12 paver covers one square foot.
How much waste should I add for pavers?
Add about 5% to 10% for a simple straight or running-bond layout, and 10% to 15% or more for diagonal, herringbone or curved patterns that require many angled cuts. The extra also covers breakage and spares for future repairs.
Does the joint gap change how many pavers I need?
Slightly. A sand or spacer joint of a few millimetres means each paver effectively covers a touch more area, lowering the count a little. This calculator assumes no gap to stay conservative, and the waste allowance comfortably absorbs the difference.
How do I calculate pavers for an irregular area?
Split the area into simple rectangles, calculate the pavers for each rectangle, add the results together, and then apply your waste allowance to the combined total. Round up to whole pavers at the end.
How many pavers are in a pallet?
It varies by paver size and supplier. A pallet of standard 12 by 12 inch pavers often holds around 64 to 80 units, while smaller brick pavers can run into the hundreds. Use this tool to get your total count, then ask your supplier how many fit on a pallet.