Short answer
An 8×12 walkway pad using 4×8 inch pavers requires 454 pavers, including a 5% waste allowance. The pad covers 96 square feet, and at 32 square inches per paver, the base count is 432 — round up to 454 after waste. You'll also need about 1.19 cubic yards of gravel base, 8 cubic feet of bedding sand, and 2 bags of polymeric sand.
How this calculator works
The calculator takes four measurements: pad length, pad width, paver length, and paver width. Everything starts with a straightforward area division, then adds a waste buffer before rounding up to a whole paver count.
Step 1 — Pad area in square inches
The pad is 8 ft × 12 ft = 96 square feet. Because paver dimensions are given in inches, the calculator converts square feet to square inches by multiplying by 144:
96 × 144 = 13,824 square inches
Step 2 — Pavers per square inch
Each 4×8 inch paver covers 32 square inches. Dividing:
13,824 ÷ 32 = 432 pavers at zero waste
Step 3 — Apply the 5% waste factor
432 × 1.05 = 453.6 → rounded up to 454 pavers
The waste factor accounts for cut pieces along the border, pavers cracked during installation or delivery, and any pattern adjustments. 5% is appropriate for a simple running-bond or stacked-bond layout on a rectangular pad. Use 10% if you're cutting herringbone or curved edges.
Secondary outputs
The calculator also estimates three supporting materials you'll need before you can set a single paver:
Base aggregate — 1.19 cubic yards. A 4-inch compacted gravel base is the minimum for a pedestrian walkway pad. The formula converts your pad area to cubic feet at 4-inch depth [(96 × 4/12) = 32 cubic feet], then divides by 27 to get cubic yards. Order 1.2 cubic yards to have a small buffer.
Bedding sand — 8 cubic feet. The setting bed sits directly under the pavers, typically 1 inch deep. The formula is simple: 96 sq ft × (1/12 ft) = 8 cubic feet of coarse washed concrete sand (also called ASTM C33 sand). Do not use mason sand or play sand — they compact poorly and allow pavers to rock.
Polymeric sand — 2 bags (50 lb each). After the pavers are set, you sweep polymeric sand into the joints and activate it with water. At roughly 80 square feet per bag, your 96-square-foot pad needs 2 bags.
What the calculator does not include
Edge restraints are not in the material count because the linear footage required depends on your layout — specifically how many sides are open versus butted against a fixed structure. Measure your perimeter and account for any sides that don't need restraint. For a fully open 8×12 pad, the perimeter is 40 linear feet.
The calculator also does not include landscape fabric, which some installers place between the subgrade and the gravel base to suppress weed growth from below. Whether you use it is a judgment call based on your soil conditions and how much you care about long-term weed management.
Rounding and ordering
Pavers are sold individually or by the pallet. Confirm coverage per pallet with your supplier and order whole pallets wherever possible — returning loose pavers is usually not a problem, but running short mid-project and waiting for a reorder is. Keep at least 3–5 extra pavers stored flat for future repairs.
Recommended materials
For a 96-square-foot walkway pad, a concrete paver with a 4×8 profile is one of the most versatile options: it runs in standard bond, stacks clean, and cuts predictably with a diamond blade. For base and joint materials, stick with products formulated specifically for paver installation rather than generic fill.
- Pavestone Holland 6x9 inch concrete paver — a durable concrete paver available at most home centers; the 6×9 variant uses identical installation steps if you want a slightly larger unit
- QUIKRETE all-purpose gravel (50 lb bag) — suitable for the compacted base layer; order by the cubic yard from a landscape supplier for volumes over 0.5 cubic yards
- SAKRETE polymeric sand (50 lb) — hardens in the joints after wetting, resists weeds and ants better than plain jointing sand
- Pavestone EdgePro paver restraint (8 ft) — spiked plastic edge restraint to keep the perimeter pavers from migrating; plan on 5–6 sections for the open sides of an 8×12 pad
FAQ
How many pavers do I need for an 8x12 walkway pad using 4x8 inch pavers? You need 454 pavers. That count covers the 96 square feet of the pad plus a 5% waste factor for cuts and breakage.
Why does the calculator use a 5% waste factor? Cuts along the edges, occasional cracked pavers, and pattern adjustments all eat into your supply. 5% is a standard minimum for a straightforward rectangular pad; bump it to 10% if you're cutting curves or a herringbone pattern.
How much gravel base do I need for an 8x12 pad? A standard 4-inch compacted base requires about 1.19 cubic yards of crushed aggregate. Ordering by the cubic yard from a landscape supplier is far more practical than buying bags for this volume.
How much paver sand do I need? A 1-inch setting bed over 96 square feet requires 8 cubic feet of coarse bedding sand. Use ASTM C33 coarse washed sand — not play sand or mason sand.
How many bags of polymeric sand will I need? Two 50 lb bags of polymeric sand will fill the joints. The calculator uses a coverage rate of 80 square feet per bag, and your pad is 96 square feet, so two bags gets you there with a small buffer.
Can I lay 4x8 pavers without a compacted gravel base? Not if you want the surface to stay level. Skipping the base is the single most common reason paver pads sink and develop trip hazards within a season or two. Four inches of compacted gravel is the minimum for a pedestrian pad.
What pattern can I use with 4x8 pavers? Running bond, stacked bond, and herringbone (45° or 90°) all work with 4x8 pavers. Herringbone resists shifting well under foot traffic, but generates more edge cuts — use a 10% waste factor for that pattern.
Do I need paver edging restraints? Yes, unless the pad is butted against a permanent structure on all sides. Without restraints, the outer pavers migrate outward under foot traffic and freeze-thaw cycles, which causes the entire field to spread and loosen.
What is polymeric sand, and is it worth using? Polymeric sand contains binders that activate with water and harden in the joints, locking pavers together and resisting weed growth and ant excavation. For a high-traffic walkway pad, the modest extra cost over plain jointing sand is worth it.
How deep should I compact the gravel base? Compact in lifts no deeper than 3–4 inches. For a 4-inch total base, one compaction pass is usually sufficient. Use a plate compactor — a hand tamper won't get you adequate density.
Can I use this calculator for a driveway pad? The paver count math is the same, but a driveway needs a deeper base — typically 6–8 inches of compacted gravel instead of 4 inches. Recalculate your aggregate volume using the deeper dimension.
What is the actual square footage of a 4x8 inch paver? One 4×8 paver covers 32 square inches, or 0.222 square feet. Dividing 96 square feet by 0.222 gives 432 pavers at perfect coverage; the 5% waste factor brings the purchase quantity to 454.