Paver Calculator
Calculate how many pavers, tons of base gravel, and tons of bedding sand you need for your patio or walkway.
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Paver Patio Measurement
A proper paver patio requires a compacted gravel base and a thin layer of bedding sand. Enter your patio dimensions and the size of your chosen pavers to calculate everything you need.
How to Use the Paver Calculator
A beautiful paver patio requires a solid foundation. Our calculator not only tells you how many brick blocks you need, but also calculates the exact tonnage of gravel and sand required for the structural base.
- Measure the area: Enter the overall length and width of your planned patio or walkway.
- Enter the paver size: Check the dimensions of your chosen paver blocks at the hardware store (e.g., standard bricks are 4" x 8", while large square pavers might be 16" x 16").
Paver Calculation Formula
We calculate the total square footage of the patio and divide it by the square footage of a single paver block.
Step 1: Calculate Area
Patio Area = Length (ft) × Width (ft)
Step 2: Calculate Pavers
Paver Area (sq ft) = (Paver Length in. × Paver Width in.) ÷ 144
Total Pavers = (Patio Area ÷ Paver Area) × 1.10 (Waste)
Step 3: Base Materials
Gravel (4 inches) = Patio Area × (4÷12) cubic ft
Sand (1 inch) = Patio Area × (1÷12) cubic ft
Paver Example Calculation
You are building a 15-foot by 10-foot patio using standard 4x8 brick pavers.
- Patio Area: 15 × 10 = 150 sq ft.
- Paver Area: (4 × 8) ÷ 144 = 0.222 sq ft per paver.
- Pavers Needed: (150 ÷ 0.222) × 1.10 = 743.2 (Buy 744 pavers).
- Gravel Base: 150 × (4÷12) = 50 cu ft. Convert to tons = ~2.6 Tons.
- Bedding Sand: 150 × (1÷12) = 12.5 cu ft. Convert to tons = ~0.6 Tons.
Tips for Laying Pavers
- Compact in layers: When laying your 4-inch gravel base, do not dump all 4 inches at once. Spread 2 inches, run a heavy plate compactor over it, then add the final 2 inches and compact again. This prevents the patio from sinking later.
- Use PVC pipes to screed sand: To get a perfectly level 1-inch sand bed, lay two 1-inch outer diameter PVC pipes on the gravel. Pour the sand, and use a straight 2x4 board dragged across the pipes to screed the sand perfectly flat. Remove the pipes and fill the gaps.
- Slope away from the house: Always ensure your patio slopes away from your foundation at a rate of 1/4 inch per foot to ensure proper rainwater drainage.
Frequently Asked Questions
How deep should the gravel base be for a paver patio?
For a standard walking patio, your compacted gravel base should be 4 inches deep. For a residential driveway that will support the weight of vehicles, the gravel base must be increased to 8 to 12 inches deep.
How much bedding sand do I need?
You should use exactly 1 inch of concrete sand (also known as bedding sand) over your compacted gravel base. Do not make the sand layer thicker than 1 inch, or your pavers will shift and sink over time.
Do I need polymeric sand?
Yes, polymeric sand is swept into the joints between the pavers after they are laid. When watered, it hardens like concrete, locking the pavers in place and preventing weeds and ants from coming up through the patio.
How much extra waste should I account for?
A 10% waste factor is standard for pavers. However, if your patio has a lot of curves, circles, or diagonal herringbone patterns, you will have to make more cuts and should increase your waste factor to 15%.