Calculate paver count by size and layout

The number of pavers you need depends on the size of each paver and how much space you leave between them. A 10x10 patio is 100 square feet. If you use 12x12-inch pavers with no gaps, you need 100 pavers. If you use 18x18-inch pavers, you need about 44 pavers. The math changes when you add grout joints or sand gaps between pavers — those gaps take up space that would otherwise be filled by paver material.

Most patios use one of three paver sizes: 12x12 inches, 18x18 inches, or 24x24 inches. Smaller pavers look busier and require more cuts at the edges. Larger pavers cover ground faster and create a cleaner look, but a single mistake during installation is more visible. The size you choose affects not just the count but also the labor and waste.

Key Takeaways

  • A 10x10 patio needs 100 pavers if you use 12x12-inch pavers with no gaps between them.
  • Larger pavers like 18x18 inches reduce the count to roughly 44 pavers, but they cost more per unit and show installation flaws more easily.
  • Grout joints or sand gaps between pavers reduce the number you need by 5 to 15 percent, depending on gap width.
  • Always buy 10 percent extra to account for cuts, breakage, and future repairs.

How paver size changes your total count

A 12x12-inch paver covers 1 square foot. Divide your 100-square-foot patio by 1, and you get 100 pavers. This is the simplest math and the most common choice for residential patios because 12x12 pavers are affordable and straightforward to find.

An 18x18-inch paver covers 2.25 square feet. Divide 100 by 2.25 and you get 44.4 pavers, which rounds to 44 or 45 depending on how you arrange them. You save money on material count, but each paver costs more, so your total material cost may not drop as much as you expect.

A 24x24-inch paver covers 4 square feet. Divide 100 by 4 and you get 25 pavers. This is the fastest to install and the cheapest per square foot in most cases, but a single broken corner or misaligned paver is impossible to hide. These large pavers also require a very solid, level base or they will rock underfoot.

Account for grout joints and sand gaps

If you plan to leave gaps between pavers and fill them with polymeric sand or grout, those gaps reduce the number of pavers you need. A half-inch gap between pavers reduces your count by roughly 5 to 8 percent. A full-inch gap reduces it by 10 to 15 percent, depending on paver size.

For example, 12x12 pavers with half-inch gaps need about 92 to 95 pavers instead of 100. The gap itself takes up the space. If you are using grout joints (which are more formal and permanent), measure the joint width your mason recommends — usually one-quarter inch to one-half inch — and subtract that from your paver dimensions before calculating.

Sand gaps are more forgiving during installation and easier to repair later. Grout joints are permanent and look more finished, but they crack over time in freeze-thaw climates and require resealing every few years.

Plan for cuts and breakage

The edges of your patio will not line up perfectly with whole pavers. You will cut pavers to fit the perimeter, and some will break during cutting or installation. Buy 10 percent extra pavers beyond your calculated count. For 100 pavers, order 110. For 45 pavers, order 50.

Cuts happen at every edge. If your patio is a perfect square, you still cut pavers along all four sides. If your patio has curves, corners, or abuts a house or fence at an angle, you cut more. A wet saw makes clean cuts, but even with a wet saw, some pavers chip or shatter. Breakage rates run 5 to 10 percent on a typical residential job.

Ordering extra also protects you if a paver is damaged after installation. Matching the exact color and finish months or years later is difficult. Having a few spares on hand means you can replace one without tearing out the whole section.

Choose between standard and permeable pavers

Standard concrete or stone pavers are solid and durable. They come in uniform sizes and are straightforward to count. Permeable pavers have holes or gaps built into them to let water drain through. They cost more per unit and come in fewer size options, but they reduce runoff and standing water.

Permeable pavers still follow the same math — a 12x12-inch permeable paver still covers 1 square foot, so you still need 100 of them for a 10x10 patio. The difference is in installation: permeable pavers require a gravel base and sometimes a geotextile fabric underneath to work properly. The base preparation is more involved and more expensive than a standard paver base.

Estimate material cost based on paver type

Concrete pavers are the cheapest option, typically running $0.50 to $2 per paver depending on finish and region. For 100 pavers, expect $50 to $200 in material. Natural stone pavers cost $2 to $8 per paver or more, so 100 pavers could run $200 to $800. Permeable pavers fall in the middle, usually $1 to $4 per paver.

These prices vary by location, supplier, and whether you buy in bulk. A pallet of pavers usually costs less per unit than buying by the piece. Check with local landscape suppliers and big-box stores to compare. Do not assume online prices include delivery — shipping pavers is expensive because they are heavy.

Layout patterns affect how many pavers fit

The pattern you choose — running bond, herringbone, basket weave, or random — does not change the total count for a square patio, but it does change how many you cut and how the cuts look. A running bond (rows of pavers offset like bricks) is the simplest and wastes the least material. A herringbone pattern is more visually interesting but requires more cuts, especially at the edges.

If your patio is not a perfect square, or if it has a border of a different paver size or color, the count changes. A border of smaller pavers around the edge means fewer large pavers in the center. Plan your pattern on graph paper or use a patio design tool before you order, so you know exactly what you are buying.

Frequently Asked Questions

Do I need to buy extra pavers if I am using a herringbone pattern?

Yes, buy at least 15 percent extra for herringbone instead of 10 percent. The diagonal cuts at the edges create more waste and breakage. Plan your pattern on paper first so you can count the exact number of cuts you will make.

What if my patio is not exactly 10x10?

Measure the actual length and width, multiply them together to get square footage, then divide by the square footage of one paver. For example, a 9x11 patio is 99 square feet. With 12x12 pavers, you need 99 pavers plus 10 percent for waste, so order 109.

Can I use pavers of different sizes on the same patio?

Yes, but it complicates the count. If you use 12x12 pavers in the center and 6x12 pavers as a border, calculate each section separately. A border of 6x12 pavers around a 10x10 patio adds roughly 30 to 40 pavers depending on border width.

Should I order pavers all at once or in batches?

Order all at once if possible. Pavers from different production batches can vary slightly in color and shade, especially natural stone. Buying in one batch ensures consistency. If you must order later, keep the batch number from your first order so the supplier can match it.

What happens if I order too many pavers?

Most suppliers accept returns within a set window, usually 30 days, if pavers are unused and in original packaging. Keep your receipt and packaging. Leftover pavers can be stored for future repairs, used for a smaller project, or donated to a local landscaper or community garden.