Paver Calculator
Calculate the number of brick or concrete pavers, commercial pallets, bedding sand, and polymeric joint sand needed for patios, walkways, and driveways.
Calculation Results
The net square footage of the patio or driveway to be paved.
Total number of individual paver stones to order including pattern cuts.
Standard manufacturer pallets (typically ~100 to 110 sq ft per banded pallet).
Tons of coarse ASTM C33 concrete sand needed for the 1-inch bedding layer.
50 lb bags of polymeric sand to lock joints and prevent weed growth.
How This Calculator Works
Follow these steps to estimate a complete paver installation:
- Select Paver Size: Choose standard 4x8 brick pavers, classic 6x9 cobbles, or large architectural slabs.
- Select Pattern: 45° herringbone provides the highest vehicular interlock for driveways, but requires 15% cutting allowance.
- Enter Dimensions: Input length and width of the patio or driveway.
- Review Complete BOM: The tool calculates individual stones, manufacturer pallets, bedding sand tons, and polymeric sand bags.
Formula & Calculations
Paver requirements follow the Interlocking Concrete Pavement Institute (ICPI) installation standards:
1. Paver Coverage Factors
- 4" × 8" Brick Pavers:
4.5 pavers per sq ft(0.222 sq ft/unit) - 6" × 6" Square Cobbles:
4.0 pavers per sq ft(0.250 sq ft/unit) - 6" × 9" Rectangle:
2.67 pavers per sq ft(0.375 sq ft/unit) - 12" × 12" Patio Slabs:
1.0 paver per sq ft(1.000 sq ft/unit) - 16" × 16" Large Format:
0.56 pavers per sq ft(1.778 sq ft/unit)
2. Pattern Cutting Allowances
The laying pattern directly dictates edge cuts along border soldier courses:
- Running Bond / Basketweave: 8% to 10% waste. Straight 90° edge cuts.
- Herringbone (45° or 90°): Minimum 15% waste. Every border intersection requires a 45-degree diagonal triangular saw cut, resulting in higher off-cut scrap.
3. Multi-Layer Takeoff (Sand & Joint Locking)
Pavers require a 1-inch bedding layer of coarse concrete sand (approx. 1 ton per 200 sq ft) and polymeric joint sand swept into the joints (1 bag per 70 to 100 sq ft for standard 4x8 pavers).
Step-by-Step Calculation Examples
Backyard Paver Patio (20ft x 15ft, 4x8 Pavers, Herringbone)
300 sq ft patio installed in a 45-degree herringbone pattern with 15% cutting waste.
- paver_size: 4x8
- pattern: herringbone
- length: 20
- width: 15
- waste: 10
- area: 300.0 sq ft
- total_pavers: 1553
- pallets: 3
- bedding_sand: 1.43 ton
- polymeric_sand: 5
Frequently Asked Questions
How many 4x8 pavers are in a square foot?
There are exactly 4.5 pavers (4" x 8" Holland style) per square foot of area. For example, a 100 square foot patio requires 450 pavers before adding a cutting waste buffer.
How many pavers are on a standard pallet?
A standard pallet of 4x8 concrete pavers typically covers about 100 to 110 square feet and contains roughly 450 to 500 individual pavers, weighing between 2,800 and 3,200 pounds.
Why does a herringbone pattern require more pavers?
A 45-degree herringbone pattern meets the perimeter border at diagonal angles. Every border paver must be cut with a masonry saw into small triangular pieces, creating significant scrap that cannot be reused. A minimum 15% waste allowance is mandatory.
How thick should the sand layer be under pavers?
ICPI guidelines mandate exactly 1 inch of uncompacted coarse bedding sand (ASTM C33 concrete sand). Never use play sand, limestone dust, or more than 1.5 inches of sand, as thick sand will wash out and cause dips.
What is polymeric sand and how many bags do I need?
Polymeric sand is a calibrated blend of fine sand and chemical polymer binders that activate when misted with water. It hardens into a flexible mortar-like joint that resists rain washout, ant infestation, and weeds. One 50 lb bag covers about 70 to 80 sq ft of standard 4x8 pavers.
How deep should the gravel base be under a paver patio?
A pedestrian patio or walkway requires 4 inches of compacted crushed stone base (#57 or crusher run). A vehicular driveway requires 8 to 12 inches of compacted aggregate base.