Answer first
What this calculator tells you
Estimate how many pavers cover an area from the paver size and a waste allowance. Order the full count once, including the cuts at the edges. Formula: Pavers = ⌈area × 144 ÷ (paver length × paver width) × (1 + waste)⌉. At the worked-example inputs, the pavers needed is 990. Holding every other input steady, moving area to cover (sq ft) from 160 to 240 moves the result from 792 to 1,188.
Transparent method
The formula
Order the full count once, including the cuts at the edges.
Worked example
Example inputs
How to interpret the result
A paver is a small piece with a known face, so coverage is a count: how many fit in the area. A 4 by 8 inch paver covers 32 square inches, so 4.5 fit in each square foot and 200 square feet takes 900. The waste allowance pushes that to 990, because every cut at an edge or curve leaves a piece that cannot be used elsewhere.
At the worked-example inputs the pavers needed is 990. It rises with area to cover (sq ft) and waste allowance and falls as paver length (in) and paver width (in) increase.
These are material-quantity estimates. Always add a waste and overage margin, and confirm actual coverage with your specific product and supplier before purchasing.
Before you rely on it
What to check
Order a few extra beyond the waste figure and keep them. Replacing a cracked paver later is hard if the color has been discontinued.
The common error
Where people go wrong with paver calculator
Measuring the area as if it were a plain rectangle. A curved edge, a step or a border course all change the count and the waste.
Sensitivity evidence
How area to cover (sq ft) changes the pavers needed
Holding every other input at the worked-example value, moving area to cover (sq ft) from 160 to 240 moves the pavers needed from 792 to 1,188: a spread of 396, or 40% of the worked-example result.
| Area to cover (sq ft) | Pavers needed | Pavers per square foot |
|---|---|---|
| 160 | 792 | 4.5 |
| 180 | 891 | 4.5 |
| 200worked example | 990 | 4.5 |
| 220 | 1,089 | 4.5 |
| 240 | 1,188 | 4.5 |
Every input, tested
Which input moves the pavers needed most
Of the 4 inputs, paver length (in) moves the pavers needed most (252 across the range tested) and waste allowance moves it least (36).
| Input | Tested from | To | Pavers needed at each end | Swing |
|---|---|---|---|---|
| Paver length (in) | 7 | 9 | 1,132 to 880 | 252 (25%) |
| Area to cover (sq ft) | 180 | 220 | 891 to 1,089 | 198 (20%) |
| Paver width (in) | 3.6 | 4.4 | 1,100 to 900 | 200 (20%) |
| Waste allowance | 8.0% | 12.0% | 972 to 1,008 | 36 (3.6%) |
Two variables at once
Pavers needed by area to cover (sq ft) and paver length (in)
Across the grid the pavers needed runs from 634 to 1,584. Moving area to cover (sq ft) from 160 to 240 shifts it by 396 at the middle column, and moving paver length (in) from 6 to 10 shifts it by 528 at the middle row, so paver length (in) is the bigger lever here.
| Area to cover (sq ft) \ Paver length (in) | 6 | 8 | 10 |
|---|---|---|---|
| 160 | 1,056 | 792 | 634 |
| 180 | 1,188 | 891 | 713 |
| 200 | 1,320 | 990 | 792 |
| 220 | 1,452 | 1,089 | 872 |
| 240 | 1,584 | 1,188 | 951 |
The highlighted cell is the worked example: 990.
Step by step
The worked example, input by input
| Input | Value used | What it means |
|---|---|---|
| Area to cover (sq ft) | 200 | Enter the area to cover (sq ft) used in this calculation. |
| Paver length (in) | 8 | Enter the paver length (in) used in this calculation. |
| Paver width (in) | 4 | Enter the paver width (in) used in this calculation. |
| Waste allowance | 10.0% | Cuts at edges and curves. Patterns with angles need more. |
| Pavers needed | 990 | |
| Pavers per square foot | 4.5 | |
Inputs, definitions and assumptions
Area to cover (sq ft)
Enter the area to cover (sq ft) used in this calculation. The prefilled worked-example value is 200.
Paver length (in)
Enter the paver length (in) used in this calculation. The prefilled worked-example value is 8.
Paver width (in)
Enter the paver width (in) used in this calculation. The prefilled worked-example value is 4.
Waste allowance
Cuts at edges and curves. Patterns with angles need more. The prefilled worked-example value is 10.0%.
How to use this calculator
- 1Verify the inputs. Gather area to cover (sq ft), paver length (in), paver width (in) and waste allowance from your own documents; the prefilled values are examples.
- 2Save a baseline. The worked example puts the pavers needed at 990. Store your own version of it as Scenario A.
- 3Test one change. Start with paver length (in), the input with the biggest effect here: moving paver length (in) from 7 to 9 takes the pavers needed from 1,132 to 880, a swing of 25% of the worked-example figure.
- 4Check the extremes. At half the example paver length (in) (4) the pavers needed is 1,980; at double (16) it is 495.
People also ask
Frequently asked questions
How do you calculate paver?
Pavers = ⌈area × 144 ÷ (paver length × paver width) × (1 + waste)⌉. Enter waste allowance in percent (10 means 10%). At the worked-example inputs the pavers needed is 990.
What does the paver result mean?
Order the full count once, including the cuts at the edges. At the worked-example inputs the pavers needed is 990. It rises with area to cover (sq ft) and waste allowance and falls as paver length (in) and paver width (in) increase.
How much does area to cover (sq ft) change the pavers needed?
Holding every other input at the worked-example value, moving area to cover (sq ft) from 160 to 240 moves the pavers needed from 792 to 1,188, a spread of 396.
What are the limits of this paver calculator?
These are material-quantity estimates. Always add a waste and overage margin, and confirm actual coverage with your specific product and supplier before purchasing. The tables on this page test area to cover (sq ft) only from 160 to 240; a value outside that range is not tabulated here.
Which input moves the pavers needed most in the paver calculator?
Ranked by how far each moves the pavers needed across the range tested: paver length (in) (252, 25%), area to cover (sq ft) (198, 20%), paver width (in) (200, 20%) and waste allowance (36, 3.6%).
If I double paver length (in) in the paver calculator, does the pavers needed double?
Doubling it from 8 to 16 takes the pavers needed from 990 to 495, which is 0.50 times the worked-example figure. So it falls instead of rising. Halving it to 4 gives 1,980.
How much does paver length (in) matter in the paver calculator?
The worked example uses 8. With the other inputs left at the worked example, moving paver length (in) from 7 to 9 takes the pavers needed from 1,132 to 880, a swing of 25% of the worked-example figure.
How much does paver width (in) matter in the paver calculator?
The worked example uses 4. With the other inputs left at the worked example, moving paver width (in) from 3.6 to 4.4 takes the pavers needed from 1,100 to 900, a swing of 20% of the worked-example figure.
How much does waste allowance matter in the paver calculator?
The worked example uses 10.0%. With the other inputs left at the worked example, moving waste allowance from 8.0% to 12.0% takes the pavers needed from 972 to 1,008, a swing of 3.6% of the worked-example figure.
Which inputs change the pavers per square foot in the paver calculator?
At the worked-example inputs it is 4.5. Paver length (in) takes it from 5.1 to 4 and paver width (in) takes it from 5 to 4.1.
What's a roofing "square"?
A unit specific to roofing equal to 100 square feet of roof surface. Materials like shingles and underlayment are typically priced and packaged per square, which is why roofing estimates are usually expressed that way instead of in raw square footage.
Sources and evidence
Free Calculators Online is independent and is not affiliated with or endorsed by the source organizations. Educational estimates only.