A paver calculator divides your patio area by the face area of one paver, adds a waste allowance and rounds up to tell you how many to buy. Formula: Pavers = area × 144 ÷ (paver length × paver width) × (1 + waste), rounded up; cost = pavers × price. A 200-square-foot patio with 8 by 4 inch pavers needs 900 pavers, or 990 with 10% waste. At $0.85 each, the pavers cost $841.50.
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How to use the paver calculator
- Enter the area in square feet. For a rectangle, multiply length by width.
- Enter the paver length and width in inches, as printed on the product.
- Enter a waste allowance. Straight patterns waste less than herringbone or curved edges.
- Enter the price of one paver.
The paver calculator shows the count and the cost.
What formula does the paver calculator use?
One square foot is 144 square inches. The area in square inches is divided by the area of one paver, then multiplied by 1 plus the waste percent, and rounded up. An 8 by 4 inch paver covers 32 square inches, so it takes 4.5 pavers per square foot.
The tool uses the paver’s listed size and ignores joint width. Real joints are small, so the extra coverage they give is usually less than one percent.
Paver calculator worked example
Results from the paver calculator:
| Patio | Paver | Waste | Pavers | Cost |
|---|---|---|---|---|
| 200 sq ft | 8 × 4 in at $0.85 | 10% | 990 | $841.50 |
| 144 sq ft | 12 × 12 in at $2.50 | 10% | 159 | $397.50 |
| 400 sq ft | 8 × 4 in at $0.70 | 5% | 1,890 | $1,323.00 |
| 120 sq ft | 6 × 6 in at $0.85 | 5% | 504 | $428.40 |
Larger pavers mean far fewer pieces. The 144-square-foot patio needs 159 square-foot pavers, but it would need 713 of the 8 by 4 inch size with the same waste.
Buying by the pallet
Stores often sell pavers by the pallet or by the square foot. If they quote square feet, compare that to your area plus waste instead of a count. If they sell full pallets, divide the paver calculator count by the pallet quantity and round up. Leftover pavers from the same batch are useful for repairs later, since color can vary between production runs.
Base, sand and edging
Pavers sit on a compacted gravel base and a thin layer of bedding sand, held in by edging. Those materials are not in this total. Price the gravel with our gravel calculator using the depth your paver maker recommends for a patio or a driveway, and add sand, edge restraint and polymeric joint sand. Before you dig, call 811 so buried utility lines can be marked.
Measuring curved or odd-shaped patios
Most patios are not perfect rectangles. Break the shape into rectangles and triangles, find the area of each, and add them. A circle’s area is 3.1416 × radius × radius, so a round patio 12 feet across has a radius of 6 feet and an area of about 113 square feet. Enter the total in the paver calculator and add more waste, since curved edges mean more cut pavers.
If you are using two sizes in a pattern, ask the maker how many square feet one set covers and work from that.
When to order
Order pavers once the layout is final. Colors can vary between batches, so buying the full amount at once, plus spares, helps the patio look even. Keep a few spares in the garage for future repairs.
Common mistakes to avoid
A common mistake is forgetting waste for cuts along edges and around corners. Another is using nominal sizes from one brand to estimate another. A third is not counting a border row of a different paver. Run the paver calculator separately for the field and the border.
Prices change from store to store and week to week, so price the exact items you plan to buy on the same day, and keep the receipt for anything you might return.
Estimates for planning only. Prices, codes and site conditions vary; get a written quote and check local building rules before you buy materials.
Related converters and calculators
Related calculators:
- Gravel calculator: paver base
- Square footage calculator: patio area
- Concrete calculator: compare a slab
Questions about this calculator
How many pavers do I need for 100 square feet?
With 8 by 4 inch pavers, 450, or 495 with 10% waste.
How many 12x12 pavers in a square foot?
One.
How much waste should I add for pavers?
About 5% for straight layouts and 10% or more for diagonal or herringbone patterns is a common rule of thumb.
Does the paver calculator include base gravel and sand?
No. It counts pavers only. Price the base separately.
Are joints included?
No. The tool uses the paver’s listed size.
Check the assumptions and units before relying on a result. Financial, tax and health estimates do not replace advice for your individual circumstances.
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