Pave precisely.
Pavers, base gravel, and sand for any patio or path. Accounts for cuts, pattern waste, and the underlying base layers.
How we calculated this
Paver count is calculated by dividing the project area by the area of a single paver, then multiplying by a pattern-specific waste factor. Running bond and stack bond patterns have minimal cuts (3-5% waste). Herringbone requires diagonal cuts at all edges (15% waste). Basket weave sits in between (8%).
A proper paver installation is a three-layer system: compacted gravel base (structural), bedding sand (leveling), and the pavers themselves. The calculator computes all three. Base depth depends on use — 4-6 inches for pedestrian patios and walkways, 8-10 inches for driveways that bear vehicle weight.
Base gravel is typically crushed stone #57 or #3 (angular, self-compacting). The calculator uses density of 1.4 tons per cubic yard, which covers most crushed aggregate. Order by the yard for large jobs (over 3 yd³); by the bag for small patios.
Bedding sand is coarse concrete sand (ASTM C33) spread 1 inch deep and screeded level. Never use play sand or masonry sand — they hold moisture and cause pavers to sink or heave.
Joint sand (polymeric or regular) fills the gaps between pavers. 1 pound per square foot is a rough estimate for standard 1/8" joints on 4×8 brick pavers. Larger pavers with the same joint width use less; wider joints use more. Polymeric sand hardens when activated with water and prevents weeds and ant invasion.
The calculator does not include: edge restraint (plastic or metal edging at the perimeter, typically 1 linear foot per linear foot of edge), geotextile fabric (recommended under base on clay soils), or drainage provisions. Budget those items separately.
The base is 80% of the project. The pavers are the last 20%.
Every paver patio, walkway, and driveway sits on a layered foundation. From bottom to top: compacted soil, 4 to 6 inches of compacted gravel, 1 inch of screeded bedding sand, and then the pavers. If any layer is wrong, the pavers move. They sink in soft spots, spread at the edges, and heave in freeze-thaw climates. Most paver failures are not paver failures. They are base failures.
How we calculated these numbers▾
Paver counts use manufacturer coverage rates per square foot by paver size. Waste factors from ICPI (Interlocking Concrete Pavement Institute) technical bulletins. Base gravel and sand volumes include 20% compaction overage per ASTM D698. Pricing reflects 2026 retail and landscape supply yard rates.
Pattern choice affects waste, strength, and cost
For patios with foot traffic only, running bond is the practical default. It looks clean, installs fast, and wastes the least material. For driveways where vehicles park and turn, herringbone is the industry standard because the interlocking angle prevents individual pavers from shifting under tire loads. The 10 to 15 percent waste premium on herringbone is worth it for any surface that carries vehicle weight.
Composite illustration based on typical project dimensions, regional contractor pricing, and 2026 material costs. Not a specific real project.
What pavers cost
DIY | Professional | |
|---|---|---|
| Pavers (200 ft²) | $600–1,200 | $600–1,200 |
| Gravel base + sand | $200–350 | Included |
| Edge restraint | $50–100 | Included |
| Polymeric sand | $50–75 | Included |
| Equipment rental (compactor) | $100–120 | Included |
| Labor | $0 (2–3 weekends) | $1,200–3,000 |
| Total | $1,000–1,850 | $2,000–4,500 |
Paver patios are one of the most DIY-friendly hardscape projects. The plate compactor rental is the critical tool — without it the base will not compact properly.
Edge restraint: what keeps the whole thing together
Plastic paver edging is the most common residential choice. It is invisible once installed (buried under mulch or turf), costs $1 to $2 per linear foot, and holds pavers firmly when spiked every 12 inches. For a more finished look, a soldier course (your pavers turned on edge along the perimeter) doubles as both restraint and decorative border. It uses more pavers but adds no separate hardware cost.
Polymeric joint sand is the final step. Sweep it into every joint, mist with water, and it hardens into a semi-rigid filler that prevents weed growth and ant hills while still allowing water drainage. Regular sand washes out in the first heavy rain. Polymeric sand stays put for 3 to 5 years before needing a top-up. Budget one 50-lb bag per 50 to 60 square feet of paver surface.
For gravel base calculations, use the gravel calculator. For projects that combine pavers with a concrete border or steps, the concrete calculator handles the footing math.
Sources
- ICPI — Interlocking Concrete Pavement Institute — Industry standards for base depth and bedding sand
- Belgard — Paver Installation Guide — Pattern waste factors and coverage recommendations
Frequently asked
How many pavers do I need for a 10×12 patio?
For a 10×12 ft patio (120 sq ft) using 4×8 brick pavers in a running bond pattern with 5% waste, you need about 570 pavers. Larger 12×12 pavers reduce count to about 126 for the same area. Use the calculator above with your specific paver size.
How deep should the base be?
Pedestrian patios and walkways: 4-6 inches of compacted gravel, plus 1 inch of bedding sand. Driveways: 8-10 inches of compacted gravel minimum, plus 1 inch of bedding sand. Insufficient base is the #1 cause of paver failure — sinking, heaving, and uneven surfaces almost always trace back to thin or improperly compacted base.
What's the difference between base and bedding sand?
Base is compacted crushed stone (structural layer that supports load). Bedding sand is 1 inch of coarse concrete sand on top of the base, used to level the pavers. Don't skip either — just sand on dirt will fail within a season.
Do I need polymeric sand?
Recommended for most installations. Polymeric sand hardens when wetted, preventing weeds, ants, and washout between pavers. Costs 2-3× more than regular sand but the install stays clean for years. Don't use it on permeable pavers or with irrigation that wets the surface daily — it breaks down.
What pattern uses the least pavers?
Stack bond (pavers aligned in grid) has the lowest waste (~3%). Running bond (standard offset pattern) is similar (~5%). Herringbone at 45 degrees is the highest (~15%) because every edge paver needs a diagonal cut.
Can I install pavers over existing concrete?
Yes — it's called an overlay. You need thin bedding sand (1/2 inch) directly on the concrete, then pavers. Edge restraint is trickier — you can't stake into concrete, so use adhesive edging. Drainage becomes critical since water can't filter through the slab.
How long do pavers take to install?
Rough DIY estimate: 1 person can do about 50-75 sq ft per day including excavation and base prep. A 10×12 ft patio takes a full weekend from start to finish. Pros installing only (with excavation and base done) lay about 200-300 sq ft per day.
Do I need an edge restraint?
Yes — without it, outside pavers slowly shift outward and the pattern unravels. Plastic or metal L-shaped edging spiked every 12 inches is standard. Concrete curb works for permanent installations but costs more. Never skip this step.
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