Calculate how many pavers you need for a patio, walkway or driveway from its size and a common paver size, with waste, plus optional gravel, sand and cost.
Paver Formula
The calculator works in two modes. To find how many pavers you need, it divides the project area by the area of one paver and adds a waste allowance:
To find how much area a known number of pavers will cover, it multiplies the count by the paver area for gross coverage, then divides by the waste allowance for a practical installed area:
The area of a single paver from its face dimensions in inches is:
- P = number of pavers to order (rounded up to a whole paver)
- A = project area in square feet
- a = face area of one paver in square feet
- W = waste allowance as a decimal (a 10% allowance is 0.10)
- C = gross coverage of the pavers on hand in square feet
- N = number of pavers available
- Lp, Wp = paver length and width in inches
The project area comes from your dimensions. For a rectangle it is length times width; for a circle it is pi times diameter squared divided by 4; or you can enter a known total area directly. The waste allowance covers cuts, breakage, and pattern losses, so the order count is always rounded up. If you enter a pack or pallet size, the order is rounded up again to whole packs. Under the expandable packaging, price and base-material settings, enter only the optional estimates you need. Each blank quantity omits that output. Gravel and bedding sand use area times your supplied depth; joint-sand bags use the supplied product coverage. Price is in USD per paver, full pack, or selected result-area unit. Area-based cost includes the face coverage of all ordered pavers, including full-pack excess; changing the result-area unit reinterprets an area quote. Costs exclude labor, tax, freight and other materials.
Pavers and Waste by Project Type
The first table shows approximate face areas and pavers per square foot. Multiply area by pavers per square foot, or divide by one paver’s exact area; do not divide by the count per square foot. The second table retains illustrative waste allowances; actual cuts, pattern and product may differ.
| Paver size | Face area | Pavers per sq ft |
|---|---|---|
| 4 x 8 in | 0.222 sq ft | 4.5 |
| 6 x 6 in | 0.25 sq ft | 4.0 |
| 6 x 9 in | 0.375 sq ft | 2.67 |
| 8 x 8 in | 0.444 sq ft | 2.25 |
| 12 x 12 in | 1.0 sq ft | 1.0 |
| Layout | Illustrative waste allowance |
|---|---|
| Straight or running bond, square area | 5% to 10% |
| Diagonal, herringbone, curves, or borders | 10% to 20% |
Example Problems
Example 1. You are paving a 20 ft by 12 ft patio with 4 x 8 in pavers and a 10% waste allowance. The area is 20 x 12 = 240 sq ft. One paver covers exactly 4 x 8 / 144 = 2/9 sq ft (about0.2222 sq ft), so the bare count is 240 / (2/9) = 1,080 pavers. Adding 10% gives 1,080 x 1.10 = 1,188 pavers to order.
Example 2. You have 500 pavers of 6 x 6 in on hand and want a practical area at a 15% waste allowance. Each paver covers 0.25 sq ft, so gross coverage is 500 x 0.25 = 125 sq ft. Dividing by1.15 gives approximately108.7 sq ft under this add-on allowance model. This is not a guarantee of installed coverage; confirm laying dimensions, joints and cuts.
Frequently Asked Questions
How much waste should I add? The retained5%–10% and10%–20% ranges are illustrative, not universal recommendations. Confirm cuts, pattern, breakage and spare-stock needs with your supplier. The widget starts with an editable10% example. Its add-on model multiplies needed material by1 + W and divides stock coverage by1 + W; this differs from discarding W percent of stock.
Do I need to enter a sand or gravel depth? Only for the corresponding estimate: expand the optional settings and supply each depth or bag coverage you want. Blank values omit estimates; zero layer depth gives zero geometric volume. The retained4 in gravel and1 in bedding example is not a site design. Use the manufacturer’s system, soil, loading and drainage requirements, and allow separately for compaction or delivery changes.
Why does the order round up to whole packs? Pavers are usually sold by the pack or pallet, not the single unit. If you enter a pack size, the calculator rounds the required count up to the next full pack so the order quantity matches what you can actually buy.
