Key Takeaways
- Calculate paver count by dividing total area by the area of a single paver
- Common paver sizes are 4x8, 6x6, 8x8 and 12x12 inches
- Add 5 to 10 percent for cuts, breakage and waste
- The base layer of gravel underneath is as important as the pavers themselves
- Patterns like herringbone increase waste by 10 to 15 percent due to more cuts
Paver is a manufactured concrete, clay or stone unit designed for laying on a prepared base to create a paved surface such as a patio, walkway or driveway.
Base course is the layer of compacted gravel beneath pavers that provides structural support and drainage, typically 4 to 8 inches deep.
Calculating how many pavers you need is simpler than most people think. The math is just area divided by area. But the practical details, like cuts at the edges, pattern waste and base preparation, are where projects go right or wrong.
Here is the process from start to finish.
Measure the total area
Measure the length and width of the area you want to pave. For a rectangle, multiply the two numbers to get the total area in square feet.
A patio that is 12 feet by 16 feet:
12 x 16 = 192 square feet
For an L-shaped area, break it into two rectangles, calculate each one and add them together. For curved or irregular shapes, measure the widest and longest points and use the bounding rectangle as your estimate.
Calculate the area of one paver
Paver manufacturers list dimensions in inches. Convert those to feet by dividing by 12, then multiply length by width to get the area of one paver in square feet.
A standard 4x8 inch paver:
(4 / 12) x (8 / 12) = 0.222 square feet per paver
A 6x6 inch paver:
(6 / 12) x (6 / 12) = 0.25 square feet per paver
An 8x8 inch paver:
(8 / 12) x (8 / 12) = 0.444 square feet per paver
A 12x12 inch paver:
1 x 1 = 1 square foot per paver
Divide total area by paver area
For the 192 square foot patio using 4x8 inch pavers:
192 / 0.222 = 865 pavers
That is the exact count with zero waste, which is never how installation actually works.
The waste allowance
Edge pavers have to be cut to fit. Some pavers crack during cutting or handling. A pattern that is not a simple running bond creates additional waste from diagonal cuts.
For a simple running bond or stack bond pattern, add 5 percent. For a herringbone or basketweave pattern, add 10 percent. For a complex layout with curves or borders, add 15 percent.
The 192 square foot patio with 4x8 pavers at 5 percent waste:
865 x 1.05 = 908 pavers
Always round up to the nearest whole paver.
Common paver sizes and their uses
4x8 inches is the most common residential paver. It works in running bond, herringbone and basketweave patterns. The small size makes it easy to handle and install.
6x6 inches works well for simple grid patterns and is often used for smaller areas like landing pads or accent areas.
8x8 inches creates a cleaner, more modern look with fewer joints. The larger size means fewer pavers per square foot but heavier individual pieces.
12x12 inches is the largest common size. It produces a smooth, tile-like appearance but requires more base preparation because each paver covers more area and any unevenness is more visible.
The base layer matters
Pavers are only as good as the base underneath them. A standard residential patio needs 4 to 6 inches of compacted gravel base, with a 1-inch layer of coarse sand on top for leveling. Driveways need 8 to 12 inches of base because of the vehicle loads.
The base material is typically a graded crushed stone like crusher run that compacts into a firm, load-bearing layer. The gravel calculator can determine the base volume once you know the patio dimensions and base depth.
Joint sand and edge restraints
After the pavers are laid, polymeric sand or regular joint sand is swept into the gaps between pavers. This locks them together and prevents shifting. Edge restraints hold the perimeter in place and prevent lateral movement.
These materials are sold separately from the pavers and need their own calculations. Joint sand coverage is typically listed on the bag, and edge restraint length equals the perimeter of the paved area.
The paver calculator determines the exact paver count, base material volume and joint sand requirements for your project.
Editorial note: This article is reviewed for accuracy and updated regularly. All calculations use standard industry formulas. For the latest paver specifications, consult your local hardscaping supplier directly.
Frequently asked questions
How many 4x8 pavers do I need for a 100 square foot patio?
At 0.222 square feet per paver, a 100 square foot area needs about 450 pavers with zero waste. Add 5 percent for a running bond pattern and you need 473 pavers. Add 10 percent for herringbone and you need 495.
What is the cheapest paver for a patio?
Concrete pavers are generally the most affordable option, ranging from $1 to $4 per square foot depending on size and style. Clay brick pavers cost more, and natural stone pavers are the most expensive.
How deep should the gravel base be under pavers?
For a residential patio, 4 to 6 inches of compacted gravel is standard. For driveways or areas with heavy loads, increase the base to 8 to 12 inches. The exact depth depends on your soil conditions and climate.
Do I need to compact the base before laying pavers?
Yes. A properly compacted base is the single most important factor in a long-lasting paver installation. Use a plate compactor on each layer of base material and make sure the surface is level and smooth before setting the pavers.