Paver Calculator
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Divide the patio area by the area of one paver, then add extra for cuts: pavers = area ÷ paver area × (1 + waste). A 20 ft × 10 ft patio with 4 in × 8 in pavers needs 900 pavers, plus 10% for cuts is 990.
For a triangle: base and height.
About 4 in for patios and paths, 6 to 8 in or more for driveways.
| Pavers | |
| Patio area | 200 sq ft |
| One paver | 8 × 4 in = 0.2222 sq ft |
| Pavers per sq ft | 4.5 |
| Pavers with no waste | 900 |
| Pavers to buy | 990 |
| Base | |
| Gravel base (4 in) | 2.47 cu yd, about 3.46 tons |
| Bedding sand (1 in) | 0.62 cu yd, about 0.83 tons |
Show steps
- Area = 20 × 10 = 200 sq ft.
- One paver = 8 × 4 ÷ 144 = 0.2222 sq ft.
- Pavers = 200 ÷ 0.2222 = 900.
- Add 10% and round up: 990.
- Gravel = 200 × 4 ÷ 12 ÷ 27 = 2.47 cu yd; sand = 0.62 cu yd.
How to use the paver calculator
- Enter the area of the patio, path or driveway.
- Enter the paver size in inches. Use the actual size listed by the maker.
- Set the extra for cuts: about 5% for a simple rectangle with a straight pattern, 10% to 15% for herringbone, curves or many cuts.
- Set the depths of the gravel base and the bedding sand, then press Calculate.
Pavers per square foot
| Paver size | Area each | Per sq ft | Per 100 sq ft |
|---|---|---|---|
| 4 × 8 in | 0.222 sq ft | 4.5 | 450 |
| 6 × 6 in | 0.25 sq ft | 4 | 400 |
| 6 × 9 in | 0.375 sq ft | 2.67 | 267 |
| 12 × 12 in | 1 sq ft | 1 | 100 |
| 16 × 16 in | 1.78 sq ft | 0.56 | 56.25 |
| 24 × 24 in | 4 sq ft | 0.25 | 25 |
Before adding extra for cuts.
Base and sand
Pavers sit on a compacted base of crushed stone and a thin layer of bedding sand. Typical depths are 4 in of base for walkways and patios and 6 to 8 in or more for driveways, with about 1 in of sand. Clay soils and cold climates often need a deeper base, so follow the paver maker’s guide for your site.
Paver practice questions
Test yourself with 6 multiple-choice questions. Choose an answer and press Submit to see if you are right and why. Your score appears at the end.
Quiz complete
Frequently asked questions
How many pavers do I need?
Divide the area in square feet by the area of one paver in square feet (length × width in inches ÷ 144), then add 5% to 15% for cuts.
How many 4 × 8 pavers are in a square foot?
About 4.5, because each paver covers 32 sq in and a square foot is 144 sq in.
How deep should the gravel base be?
Commonly about 4 in for walkways and patios and 6 to 8 in or more for driveways, compacted in layers. Poor or wet soils need more.
Do joints between pavers change the count?
Joints for interlocking pavers are very thin, so the count barely changes. For pavers with wide joints, add the joint width to the paver size.
Sources
- Interlocking Concrete Pavement Institute: Technical specifications
- NIST Handbook 44: Units and conversions
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