Calculate paver count by patio size and paver dimensions
A 12x12 patio is 144 square feet. The number of pavers you need depends on the size of each individual paver. If you use 12x12-inch pavers, you need exactly 144 of them. If you use 6x6-inch pavers, you need 576. If you use 12x24-inch pavers, you need 72. The math is straightforward: divide your total square footage by the square footage of one paver, then add 10 percent for cuts and breakage.
Most patio pavers come in a handful of standard sizes. The most common are 12x12 inches (1 square foot), 6x6 inches (0.25 square feet), 12x24 inches (2 square feet), and 18x18 inches (2.25 square feet). Rectangular pavers like 6x12 inches (0.5 square feet) are also widely available. Before you calculate, check the exact dimensions of the pavers you plan to buy, because manufacturers sometimes vary by a quarter inch, and that affects how many you need.
Key Takeaways
- Multiply the length and width of your patio to get total square feet, then divide by the square footage of one paver to find how many you need.
- Add 10 percent to your total to account for pavers you will cut to fit edges and corners, plus a few extras for breakage during installation.
- The most common paver sizes are 12x12 inches (144 pavers for a 12x12 patio), 6x6 inches (576 pavers), and 12x24 inches (72 pavers).
- Confirm the exact dimensions of the pavers you buy before calculating, because slight variations between manufacturers change the count.
- Ordering a few extra pavers beyond your calculation protects you if you make mistakes during layout or if pavers crack during delivery or installation.
How to calculate pavers for your specific patio size
Start by measuring your patio length and width in feet. Multiply those two numbers to get the total square footage. For a 12x12 patio, that is 12 × 12 = 144 square feet. Write this number down.
Next, find the dimensions of the pavers you want to use. Convert those dimensions to feet and multiply them together to get the square footage of one paver. A 12x12-inch paver is 1 foot × 1 foot = 1 square foot. A 6x6-inch paver is 0.5 feet × 0.5 feet = 0.25 square feet. A 12x24-inch paver is 1 foot × 2 feet = 2 square feet.
Divide your total patio square footage by the square footage of one paver. For a 144-square-foot patio with 12x12-inch pavers: 144 ÷ 1 = 144 pavers. For the same patio with 6x6-inch pavers: 144 ÷ 0.25 = 576 pavers. For 12x24-inch pavers: 144 ÷ 2 = 72 pavers.
Add extra pavers for cuts, breakage, and mistakes
The calculation above tells you the theoretical number of pavers needed if every single one fit perfectly with no waste. In reality, you will cut pavers to fit along the edges and corners of your patio. Some of those cut pieces will be too small to use. A few pavers will crack during delivery or while you are laying them. You need to order extra to cover these losses.
Add 10 percent to your calculated total. For 144 pavers, that is 144 × 1.10 = 158.4, so order 159 pavers. For 576 pavers, that is 576 × 1.10 = 633.6, so order 634. For 72 pavers, that is 72 × 1.10 = 79.2, so order 80. If your patio has an irregular shape or many angles, consider adding 15 percent instead, because you will have more cuts and more waste.
Ordering a few extra pavers also gives you replacements if one cracks or stains years after installation. Paver colors can fade or shift between production batches, so buying from the same lot now is easier than trying to match them later.
Common paver sizes and how many you need
| Paver Size | Square Feet per Paver | Pavers Needed (144 sq ft) | With 10% Extra |
|---|---|---|---|
| 6x6 inches | 0.25 | 576 | 634 |
| 6x12 inches | 0.5 | 288 | 317 |
| 12x12 inches | 1 | 144 | 159 |
| 18x18 inches | 2.25 | 64 | 70 |
| 12x24 inches | 2 | 72 | 80 |
Smaller pavers like 6x6 inches require more pieces but are easier to cut and fit around curves or irregular edges. Larger pavers like 12x24 or 18x18 inches cover more ground with fewer pieces, which speeds up installation but leaves more visible grout lines and requires more precise cuts at the edges.
Measure your patio before you order
Measure the length and width of your patio space at least twice, in different spots. Patios are not always perfectly square or rectangular. If one side is 12 feet but the opposite side is 12 feet 3 inches, you have a trapezoid, not a rectangle. Measure the diagonals as well—if they are not equal, your patio is not square.
If your patio is not a perfect rectangle, break it into rectangles and calculate each section separately, then add them together. A patio that is 12 feet on one side and 12 feet 6 inches on the other is close enough to 12x12 that you can use 144 square feet, but if the difference is larger, the extra measurement matters.
Sketch your patio on paper and mark where you will start laying pavers. Most installers start from the center or from one corner and work outward. The starting point affects how many pavers you will need to cut, so thinking through the layout before you order can sometimes reduce waste.
Factor in the pattern and grout joints
The pattern you choose—running bond, herringbone, basket weave, or random—does not change the total number of pavers you need, but it does affect how many you cut and where the cuts happen. A running bond pattern (pavers laid in straight rows, offset like bricks) uses the fewest cuts. A herringbone pattern (pavers laid at 45-degree angles) uses more cuts and more waste.
Grout joints (the gaps between pavers) are typically 0.25 inches to 0.5 inches wide. These gaps are so small that they do not meaningfully change your paver count. A 12x12-inch paver with a 0.5-inch joint on two sides still occupies roughly 1 square foot of space. You do not need to adjust your calculation for grout.
Where to buy pavers and verify your count
Home improvement stores like Home Depot and Lowe's stock pavers in standard sizes and can tell you the exact dimensions and square footage of each product. Many stores will calculate the number you need if you give them your patio dimensions. Landscape supply companies often have a wider range of sizes and colors and may offer bulk discounts if you order a full pallet.
When you order, confirm the exact dimensions of the pavers one more time. A paver labeled "12x12" should be exactly 12 inches by 12 inches, but some manufacturers round or vary slightly. Ask the supplier for the square footage per paver if it is not listed on the packaging. If you are ordering online, check the product description carefully and read reviews to see if other customers mention size discrepancies.
Many suppliers will accept returns of unopened pallets if you ordered too many. Ask about their return policy before you order, and keep your receipt and packing slip. If you order too few, you may not be able to match the color or finish later, so it is better to order slightly too many than too few.
Frequently Asked Questions
Do I need to subtract the area where my house or other structures are?
Yes. If your patio is 12x12 but a 4x4 section is covered by a roof overhang or is not being paved, subtract that area from your total. In this case, 144 − 16 = 128 square feet, so you would need 128 pavers (plus 10 percent extra) if you are using 12x12-inch pavers.
What if my patio is not a perfect square?
Measure the length and width at multiple points. If they vary, calculate the area as if it were a rectangle using the average measurements, or break the space into smaller rectangles and add them together. For most residential patios, the difference is small enough that the 10 percent extra you are ordering will cover any miscalculation.
Should I order pavers in different colors or sizes?
If you are mixing sizes or colors, calculate how many of each type you need separately. For example, if half your patio uses 12x12-inch pavers and half uses 6x12-inch pavers, calculate 72 square feet for each size, then convert to paver count. Order each type from the same production batch to may support color consistency.
Can I use the same calculation for irregular shapes like circles or octagons?
For a circular or octagonal patio, calculate the total square footage using the appropriate geometric formula, then divide by the paver size as usual. However, irregular shapes create more cuts and more waste, so add 15 to 20 percent extra instead of 10 percent.
What if I want to lay pavers diagonally?
Diagonal patterns require more cuts at the edges, so add 15 percent extra instead of 10 percent. The total number of pavers does not change—you still need 144 pavers for a 12x12 patio with 12x12-inch pavers—but you will have more scrap and breakage.