Paver Calculator — Patio & Walkway Materials
Calculate how many pavers you need for any patio, walkway, or driveway project. Enter your area dimensions, paver size, and joint width to get an accurate count plus sand and gravel estimates.
Enter Dimensions
Polymeric sand joints: 1/4 in typical
Use 10% for simple shapes, 15% for cuts
Results
Pavers Needed
264pavers
Total Area
120sq ft
Sand Base (50 lb bags)
12bags
1-inch bedding layer
Gravel Base
1.5tons
4-inch compacted gravel base
Editorial Standards
Each calculator is reviewed for formula accuracy, unit consistency, and alignment with current U.S. building practices before publication. We verify outputs against published engineering references and real-world project data. Learn more about our methodology.
Pavers are sold by the pallet, and pallet quantities vary by size and manufacturer. Over-ordering by half a pallet costs money; under-ordering by half a pallet stalls your project and risks a dye-lot mismatch on a reorder. An accurate count before you call the supplier is the simplest way to avoid both problems.
Paver count depends on paver face dimensions, joint width, and total coverage area. Common concrete pavers are 4×8 inches and 6×9 inches; natural stone and brick pavers vary widely. Joint width matters: a 1/4-inch polymeric sand joint changes the effective paver coverage slightly, and that difference compounds across hundreds of pavers. The base layer — typically 4–6 inches of compacted gravel plus 1 inch of bedding sand — adds its own material cost that most online calculators ignore. This calculator estimates both layers.
Diagonal and herringbone patterns need 15% waste — all those angled perimeter cuts add up. Running bond is fine at 10%. The base estimate (gravel + bedding sand) is included automatically.
Specialized Versions
How the Paver Calculator Works
The calculator finds the effective area of each paver by adding the joint width to both dimensions: (paver length + joint) × (paver width + joint). Total area divided by this effective unit area gives the raw paver count, then the waste factor is applied. Sand and gravel estimates use standard industry ratios.
Paver Count Reference (12×6 in Standard Paver, 1/4 in Joint)
| Area Size | Area (sq ft) | Pavers (0% waste) | Pavers (10% waste) | Sand Bags (50 lb) |
|---|---|---|---|---|
| 10 × 10 ft | 100 | 449 | 494 | 10 |
| 12 × 16 ft | 192 | 862 | 949 | 20 |
| 20 × 20 ft | 400 | 1,797 | 1,977 | 40 |
| 24 × 30 ft | 720 | 3,234 | 3,558 | 72 |
Values based on standard 12×6-inch paver (actual 11¾×5¾ in) with 1/4-inch polymeric sand joints, yielding approximately 4.5 pavers per square foot.
Pro Tips
- Order 10–15% extra for diagonal or herringbone patterns. Running bond patterns (paver edges parallel to the border) generate minimal waste. Diagonal (45°) or herringbone patterns generate significantly more perimeter cuts and require a higher waste factor — use 15% rather than the default 10%.
- Compact the base in two lifts. For a 4-inch gravel base, compact in two 2-inch lifts rather than all at once. A plate compactor cannot effectively compact more than 3 inches of material per pass — one thick lift will settle unevenly after installation.
- Use polymeric sand for joint fill. Standard sand washes out and allows weed growth. Polymeric sand activates with water to form a firm joint that resists washout, ants, and weeds. It adds minor cost but significantly extends the maintenance-free life of the installation.
- Slope the surface 1/8 inch per foot away from structures. Pavers must drain — a flat installation pools water at the house foundation. Set your screed rails at a 1/8-inch-per-foot slope during the sand bedding step.
Common Mistakes
- Skipping the gravel base. Pavers installed directly on compacted soil or sand without a gravel base will heave and shift in frost climates. The gravel base must extend below the frost depth to prevent seasonal movement.
- Using the finished paver size instead of the actual size. Most concrete pavers have a nominal size that is 1/4 inch larger than the actual manufactured size (to include the joint). Entering the nominal size instead of the actual size will undercount pavers.
- Not installing edge restraints. Pavers without a rigid border (plastic edging, concrete curb, or soldier course) will migrate outward under load and foot traffic, widening joints and causing pavers to settle.
Paver Patterns and Base Depth by Climate
Pattern Waste Factors
The lay pattern significantly affects how many extra pavers you need for perimeter cuts. Use these waste percentages when adjusting the calculator:
| Pattern | Recommended Waste | Notes |
|---|---|---|
| Running bond (parallel to border) | 5–10% | Fewest cuts; most efficient use of material |
| Stacked bond | 5–10% | Aligned joints; structurally weaker, good for low-traffic |
| Basketweave | 10% | Requires square pavers or 2:1 ratio rectangular pavers |
| Herringbone (90°) | 10–12% | Strong interlocking; preferred for driveways |
| Diagonal / 45° herringbone | 15–20% | Heavy perimeter cuts; budget extra pavers |
Base Depth by Climate and Use
The ICPI (Interlocking Concrete Pavement Institute) recommends base depth based on frost severity and load:
- No-freeze climates (IECC zones 1–2): 4 inches of compacted aggregate base is sufficient for pedestrian areas. Use 6 inches for vehicle traffic.
- Mild freeze climates (IECC zones 3–4): 6 inches of compacted base for pedestrian areas; 8 inches for driveways.
- Severe freeze climates (IECC zones 5–7): 8–12 inches of base, placed below the frost line. Inadequate base is the primary cause of paver settlement and heaving in cold climates.
Add 1 inch of bedding sand on top of the compacted base regardless of climate zone. Do not use base material to substitute for bedding sand — the two layers serve different functions.
Paver Material Comparison
| Material | Cost (Materials Only) | Notes |
|---|---|---|
| Concrete pavers | $2–$6 / sq ft | Widest selection; consistent dims; meets ASTM C936/C936M-24 |
| Brick pavers (clay) | $4–$8 / sq ft | Fade-resistant; use SW-grade in freeze-thaw climates |
| Limestone / sandstone | $8–$15 / sq ft | Natural look; irregular sizing adds 15–25% waste |
| Travertine | $10–$20 / sq ft | Premium; requires sealing in freeze-thaw climates |
| Granite | $15–$30 / sq ft | Extremely durable; highest material cost |
| Permeable pavers | $4–$9 / sq ft | Open-graded base required for drainage |
Prices reflect 2025–2026 U.S. material costs (Stone Centers / HomeGuide). Installation labor adds $8–$20/sq ft depending on pattern complexity and base condition. Natural stone pricing varies with import shipping costs and origin country.
Frequently Asked Questions
How many pavers do I need per square foot?
Depends on size. A 12×6-inch paver (actual 11¾×5¾ in) with a 1/4-inch joint takes about 4.5 per square foot. A 12×12-inch square paver needs about 1.1 per square foot.
How deep should a gravel base be for a paver patio?
A 4-inch compacted gravel base is standard for residential paver patios and walkways. For driveways or heavy-load areas, increase to 6–8 inches. The gravel base provides drainage and prevents frost heave from shifting the pavers.
How much sand do I need under pavers?
Use a 1-inch bedding layer of coarse concrete sand (ASTM C33). For a 100 sq ft patio, that's about 10 bags (50 lb) — one bag per 10 square feet.
What joint width should I use between pavers?
A 1/4-inch (0.25 in) joint is standard for polymeric sand. Smaller joints (1/8 in) work for tightly fitting pavers but require precise installation. Wider joints (3/8–1/2 in) are used for flagstone or irregular shapes. Polymeric sand stabilizes the joints and resists weeds.
How much waste should I add for a paver patio?
Add 10% waste for simple rectangular patios. For L-shaped areas, curves, or herringbone patterns (which require diagonal cuts), use 15%. Diagonal patterns can produce up to 20% cut waste at edges.
Can I use pavers for a driveway?
Yes — concrete pavers rated for vehicular traffic (minimum 2.375 in thick) are suitable for driveways. Increase the gravel base to 6–8 inches for vehicle loads. Use a 6-inch gravel base with a 1-inch sand setting bed and pavers meeting ASTM C936/C936M-24 specifications.