Piece count from pattern
Paver count is patio area divided by the area of one paver, then the pattern's waste on top. A 4×8-inch paver covers 0.22 sq ft, so a 12×12 patio takes about 660 pieces before waste. Herringbone and running-bond patterns cut more — bump the allowance to 15% instead of the standard 10%.
The price line matters as much as the count
Pavers price per square foot, per piece and per pallet, and the cheapest math is usually the pallet. Multiply your count by the per-paver price and compare with the pallet price for the same coverage — the calculator's count makes both quotes checkable, including the base sand and gravel underneath.
Paver count: area, unit size, pattern waste
The arithmetic is short and the pattern is what makes it interesting:
paver area = area (sq ft) ÷ pavers per sq ft- A standard 4×8 in paver is 0.222 sq ft, so there are about 4.5 pavers per square foot before waste
order = count × (1 + pattern waste)
Worked example on a 12×12 ft patio (144 sq ft) using 4×8 pavers: 144 ÷ 0.222 = 648 pavers at raw count. In a running bond pattern at 5% waste you order 681. The same patio laid in 45° herringbone at 15% waste needs 746 — a difference of 65 pavers, from nothing but the way they are set.
The pattern decides the waste, and the waste decides the bill
Waste in paving is not carelessness, it is geometry. Straight patterns have straight edges, so almost every paver goes down whole. Angled patterns break against the perimeter, so every boundary stone has to be cut.
| Pattern | Waste to add | Where it belongs |
|---|---|---|
| Stacked bond | 2–5% | Modern linear look, fewest cuts of all |
| Running bond (offset) this calculator's default | 5% | Patios, walkways, pool decks |
| Basketweave | 5–10% | Traditional patios, mixed unit sizes |
| Herringbone 90° | 10% | Residential driveways |
| Herringbone 45° / diagonal | 15% | Driveways and slopes: strongest interlock |
| Random, fan, circular | 18–25% | Decorative features; scribed cuts on every course |
On a driveway the extra waste is not waste. Herringbone locks the field in two directions at once, which is what stops pavers creeping outward under turning tyres. On a foot-traffic patio, running bond at 5% gives the same service life for less material, and the 10% you save is 10% off the paver line of the order.
The base is half the order — not the pavers
Homeowners budget for stone and forget the layers underneath, which is where roughly half the material cost of a real job sits. The base depth depends on what will drive on it:
| Use | Compacted base | Bedding sand |
|---|---|---|
| Patio, walkway | 4 in | 1 in |
| Driveway, cars and light vehicles | 6 in | 1 in |
| Driveway, heavy or commercial | 8–12 in | 1 in |
Convert any of those to a real order with two steps:
- Gravel.
tons = area (sq ft) × depth (in) ÷ 12 ÷ 27 × 1.5. Crushed stone runs about 1.5 short tons per cubic yard. - Bedding sand.
cubic yards = area ÷ 324for a 1 in layer.
Worked example, 12×12 ft patio at 4 in of base: 144 × 4 ÷ 12 = 48 cu ft, which is 1.78 cu yd, so about 2.7 tons of base gravel. Bedding sand for the same patio at 1 in is 144 ÷ 324 = 0.44 cu yd, roughly 24 bags of 50 lb. The paver count was 681; the gravel is measured in tons and the sand in bags. Three units, one patio.
Joint sand, and the restraint nobody orders
Joint sand is what transfers load between pavers. Without it every stone takes the load alone and the edges chip.
| Joint width | Coverage per 50 lb bag of polymeric sand |
|---|---|
| 1/8 in | 90–120 sq ft |
| 3/16 in | 60–80 sq ft |
| 1/4 in | 40–60 sq ft |
| 3/8 in | 30–40 sq ft |
| 1/2 in | 20–30 sq ft |
Polymeric sand hardens when watered, locks the joints against wash-out and slows weed germination. Plain masonry sand is cheaper and washes out within a season or two, which is why polymeric is the default on any surface that will see rain or a pressure washer.
Edge restraint is mandatory, not optional. Every paver surface spreads outward under load unless the perimeter is held, and freeze-thaw cycles accelerate it. Plastic edge restraint is fine for patios and walkways; aluminium is the heavier-duty choice for driveways. Concrete curbing is a professional install. Budget the perimeter length plus 5% for corner overlaps.
Cost: per piece, per square foot, per pallet
Three pricing formats are in circulation and only one of them is easy to compare:
| Format | Typical range | Watch for |
|---|---|---|
| Per square foot, installed | $8 – $25 | The only apples-to-apples number |
| Per paver, material only | $0.50 – $3.00 | Cheap per piece on a small unit, expensive per sq ft |
| Per pallet | Quoted by the pallet or pack | Pack size varies by brand; not all sell broken packs |
Pack rounding is a real cost on small jobs. If pavers come 8 to a pack and your count is 337, you buy 344 — an 8-paver overhead worth under 1% on a large order and 5–8% on a small one. Ask before you order whether the supplier sells broken packs; some brands allow it on patio sizes and some only sell full pallets.
Common mistakes that cost a second delivery
- Using the raw paver count. 648 pavers fits a 12×12 patio only if every paver goes down whole. Order with the pattern waste: 681 for running bond, 746 for 45° herringbone.
- Forgetting the base. Sand-and-pavers over bare soil fails in one winter. 4 in compacted base for a patio, 6 in for a driveway, and both compacted in lifts, not dumped in one pass.
- Mixing units. Pavers are counted, base is weighed in tons, sand is measured in cubic yards or bags. Converting between them wrongly is where the big errors live.
- Skipping edge restraint. The field spreads outward and the outer course comes loose. This is a code-level requirement, not a preference.
- Choosing the pattern for looks alone. 45° herringbone on a driveway is worth the 15% waste. On a patio, running bond saves 10% and looks the same after a season.
- Washing in polymeric sand too early. The compaction pass, the clean-off and the watering each happen at a specific point. Water on an uncompacted field and the joints fail.
- Laying pavers tight against a wall with no joint. They need room to move. Tight installation is how corner units crack in the first freeze.
Tools and materials for laying pavers
Half of a paver job is the base, and the base is where cheap tools show up later as a sunken patio. These are the items the depth and compaction figures on this page assume.
- Plate compactor — Compacts the base in lifts and seats the pavers at the end. A hand tamper will not reach the density a driveway base needs.
- Polymeric joint sand — Hardens when watered to lock the joints and resist wash-out. Match the bag count to the coverage table above.
- Paver edge restraint — Holds the perimeter so the field cannot spread under load. Required on every installation, and the item most often left off the order.
- Rubber mallet and 4 ft level — The mallet seats each paver without chipping it; the level checks the fall away from the house as you work, not after.
As an Amazon Associate I earn from qualifying purchases. The links above are affiliate links — if you buy through one, the price you pay is unchanged and a small commission helps keep these calculators free. Tools are listed because the job calls for them, not because of commission rates.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- USDA Natural Resources Conservation Service — soil texture, bulk density and seeding rate guidance.
- US Geological Survey — mineral commodity data and aggregate density references.
- National Stone, Sand & Gravel Association — aggregate grading and product specification references.
- Interlocking Concrete Pavement Institute (ICPI) — pattern waste factors, base depth and edge restraint requirements.
Figures, formulas and reference tables last verified: 21 September 2026