Free Paver Calculator
Use this paver calculator to see how many pavers you need, plus the base gravel and sand to lay them on.
A paver patio has three layers: a compacted base of crushed stone, a thin bed of sand, and the pavers. This calculator works out all three from your patio size and paver size, so you can order everything at once.
How the paver calculator works
Pavers needed = area ÷ area of one paver, plus extra for cuts. Area of one paver = length × width in inches ÷ 144. Base and sand are area × depth in feet ÷ 27 cubic yards, with 15% added to the base for compaction and 10% to the sand.
Pavers per square foot for each size
| Paver size | Pavers per sq ft | Pavers per 100 sq ft |
|---|---|---|
| 4 × 8 in | 4.5 | 450 |
| 6 × 6 in | 4 | 400 |
| 6 × 9 in | 2.67 | 267 |
| 12 × 12 in | 1 | 100 |
| 16 × 16 in | 0.56 | 56 |
| 24 × 24 in | 0.25 | 25 |
Paver base and paver sand calculator: what goes under a patio
- Base: crushed stone (often ¾ in minus or crusher run), compacted in 2 in layers. Commonly about 4 in for patios and walkways and more for driveways; follow the paver maker's guide for your soil. See the crushed stone calculator for bigger jobs.
- Bedding sand: about 1 in of coarse concrete sand, screeded flat. Not play sand or stone dust.
- Joint sand: polymeric sand swept into the joints after laying; coverage is printed on the bag.
Frequently asked questions
How many pavers do I need?
Divide the area in square feet by the area of one paver (length × width in inches ÷ 144), then add 5 to 10% for cuts. A 10 × 12 ft patio of 4 × 8 in pavers needs 540 pavers, or 567 with 5% extra.
How much paver base do I need?
Most patios and walkways use about 4 in of compacted crushed stone, and driveways more. Multiply the area by the depth in feet, add about 15% for compaction, and divide by 27 for cubic yards.
How much paver sand do I need?
About 1 in of bedding sand under the pavers: roughly 1 cubic yard per 300 sq ft, or 22 bags of 0.5 cu ft for a 120 sq ft patio, including 10% extra.
How accurate is this paver calculator?
The count is exact for the area and paver size you enter, before cuts. Herringbone patterns, curves and many edges waste more, so raise the extra to 10% or more.