Enter your patio dimensions, paver size, and layout pattern to instantly get paver count with waste factor, bedding sand, gravel base, polymeric sand, edge restraint, and total cost — ready for the hardware store.
For L-shaped patios, break into rectangles and calculate each separately. Total the results.
🧱
4×8″ brick is the most versatile — works with nearly every pattern. 12×12″ slabs install faster on large patios. Verify exact dimensions with your supplier.
in
in
↔
1/8″ is the standard for most concrete pavers. Fill joints with polymeric sand — it activates with water, locks pavers, and resists weeds.
Layout Pattern
Diagonal patterns (herringbone 45°) require more cuts at the edges — increase waste to 15%. Stacked bond needs the least material.
Base & Cost
⛏
Use 4″ compacted 3/4-inch minus crushed gravel for patios. Add 6–8″ for driveways. Compact in 2-inch lifts with a plate compactor.
$per paver
Concrete pavers: $0.50–$2.00 each. Clay brick: $0.80–$2.50. Natural stone: $2–$6+. Leave at $0 to skip cost estimate.
Results
Enter patio specs then hit Calculate
Total Pavers
—
incl. waste factor
Patio Area
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square feet
Pavers / sq ft
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incl. joint
Waste Factor
—
for this pattern
Pattern
Pattern Preview — —
Complete Materials List
🧱Pavers (incl. waste)—units
🪨Gravel base (4″ compacted)—cu yd
🏖️Bedding sand (1″ layer)—cu yd
🧪Polymeric sand (joints)—50 lb bags
📏Edge restraint—lin ft
💵Est. paver material cost—
Detailed Breakdown
Patio & Paver Dimensions
Patio area
—
Perimeter (edge restraint)
—
Paver size (nominal)
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Joint width
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Coverage per paver (with joint)
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Pavers per sq ft
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Paver Count
Raw paver count (no waste)
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Pattern
—
Waste factor
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Total pavers to order
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Base Materials
Gravel base depth
—
Gravel volume
—
Bedding sand (1 in)
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Polymeric sand bags
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Inputs Used
Patio dimensions
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Paver / joint / pattern
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How to Calculate Paver Quantity & Materials
Calculating paver materials involves four steps: (1) find total patio area, (2) determine how many pavers cover one square foot using actual paver size plus joint width, (3) apply a pattern-specific waste factor for edge cuts and breakage, and (4) calculate base materials — gravel, bedding sand, polymeric sand, and edge restraint. Always buy 10–15% more than the raw count. Running out mid-project and needing a new batch risks color variation between production lots.
1 Patio Area
Measure length × width for the total square footage. For L-shaped patios, split into two rectangles and add the areas. Curved edges add complexity and waste — treat as a rectangle and budget 15% extra.
Area (SF) =
Length (ft) × Width (ft)
Example:
16 ft × 12 ft = 192 SF
Perimeter =
2 × (L + W)
= 2 × (16+12) = 56 LF
2 Pavers per SF
Divide 144 (sq inches per sq ft) by the paver's coverage area — which includes the paver size plus joint width on each edge. This gives you paver density per square foot.
Coverage per paver =
(L + joint) × (W + joint)
in square inches
Pavers per SF =
144 ÷ Coverage
4×8 paver, 1/8″ joint:
(4.125 × 8.125) = 33.5 in²
144 ÷ 33.5 = 4.30/SF
3 Waste Factor
Pattern determines waste. Straight patterns (running bond, stacked) waste 5–7% from simple edge cuts. Diagonal patterns (herringbone 45°) waste 10–15% because every perimeter paver needs an angled cut.
Every paver installation needs: 4–8″ of compacted 3/4-minus gravel, 1″ of coarse bedding sand, polymeric sand for joints, and edge restraint around the perimeter. These are as important as the pavers themselves.
Gravel (cu yd) =
Area × Depth (ft) ÷ 27
Sand (cu yd) =
Area × 0.0833 ÷ 27
Poly sand: 1 bag
per 50–75 sq ft
Edge: 2×(L+W) lin ft
Installation Pro Tips
1. Slope away from structures — minimum 1/8″ per foot (1% grade). Build the slope into the gravel base, not the sand layer.
2. Edge restraint is not optional — install aluminum or plastic paver edging staked every 12 inches before laying a single paver. Without it, edge pavers migrate outward and the whole surface eventually fails.
3. Use coarse bedding sand, not play sand — coarse concrete sand (ASTM C33) compacts properly and drains. Fine play sand shifts under load.
4. Order from the same production lot — paver colors vary between manufacturing runs. Order all pavers at once. If you run short, color may not match. This is why adding 10–15% waste is worth the small extra cost.
5. Compact twice — once before laying pavers (the gravel base) and once after (the finished surface). Final compaction seats pavers and locks joint sand.
Example Calculations — 3 Real-World Patio Scenarios
These worked examples show the calculator across three common U.S. residential patio projects.
🟢 Backyard Patio
16×12 ft, 4×8 brick, running bond
Patio: 16 × 12 = 192 sq ft
Paver: 4×8 in (4.5/sq ft raw)
Joint: 1/8 in
Pattern: Running Bond (7% waste)
Base: 4 in gravel + 1 in sand
Pavers: ~930 · Gravel: 2.37 cu yd Sand: 0.59 cu yd · Poly sand: 4 bags
The 4×8 brick in running bond is the easiest DIY pattern — no diagonal cuts, minimal waste, and the staggered joint adds structural strength. Pallets typically hold ~450 pieces — order 2 pallets.
🟡 Pool Deck
20×16 ft, 6×6, herringbone 90°
Patio: 20 × 16 = 320 sq ft
Paver: 6×6 in (4.0/sq ft raw)
Joint: 1/8 in
Pattern: Herringbone 90° (10% waste)
Base: 6 in gravel (pool edge)
Pavers: ~1,410 · Gravel: 5.93 cu yd Sand: 0.99 cu yd · Poly sand: 6–7 bags
Pool decks need a 6-inch gravel base for drainage and stability near water. Slope all surfaces away from the pool edge at 1/4″ per foot minimum to channel splash water to landscape drains.
🔴 Modern Large-Format
24×18 ft, 12×24, stacked bond
Patio: 24 × 18 = 432 sq ft
Paver: 12×24 in (0.5/sq ft raw)
Joint: 3/16 in
Pattern: Stacked Bond (5% waste)
Base: 4 in gravel + 1 in sand
Pavers: ~228 · Gravel: 5.33 cu yd Sand: 1.33 cu yd · Poly sand: 7–8 bags
Large-format 12×24″ slabs install much faster — only 228 pieces vs 1,800+ for the same area in 4×8 brick. These large slabs are heavy (40–60 lbs each) — plan for help on installation day.
Common Paver Sizes — Coverage Quick Reference
Pavers per square foot values assume a 1/8″ joint on all sides. Verify exact dimensions with your supplier.
Paver Size
Coverage (in²)
Raw /sq ft
With 1/8″ Joint
Best Patterns
Best For
4×8 in Most Popular
32 in²
4.50
~4.30
All patterns
Patios, walkways, driveways
6×6 in
36 in²
4.00
~3.84
Running bond, stacked
Patios, pool decks
6×9 in
54 in²
2.67
~2.56
Running bond, basketweave
Patios, courtyards
12×12 in
144 in²
1.00
~0.97
Stacked, running bond
Large patios, stepping stones
12×24 in Modern
288 in²
0.50
~0.49
Stacked, running bond
Contemporary large patios
4×8 in
Raw per sq ft4.50
With 1/8″ joint~4.30
Best patternAll patterns
6×6 in
Raw per sq ft4.00
With 1/8″ joint~3.84
Best forPatios, pool decks
12×12 in
Raw per sq ft1.00
With 1/8″ joint~0.97
Best forLarge patios
Frequently Asked Questions
A 12×12 foot patio is 144 square feet. Using the most common 4×8-inch brick with a 1/8-inch joint (about 4.30 pavers per square foot), you need approximately 619 raw pavers. Add a 7% waste factor for running bond: 619 × 1.07 = 662 pavers total. For a 12×12-inch square slab at about 0.97 pavers per square foot: 144 × 0.97 × 1.05 waste = 147 slabs. Always round up to the nearest full pallet or box quantity offered by your supplier.
Herringbone 45° requires the most pavers due to diagonal cuts at every edge — plan for 15% waste. Nearly every border paver needs an angled cut and the off-cuts are wedge-shaped and can't be reused elsewhere. Stacked bond (grid pattern) requires the least waste — as little as 5% — because cuts are simple straight lines and off-cuts can often fill the next opening in the row. Running bond falls in between at about 7% waste and is the most popular for its balance of good looks, structural strength, and minimal waste.
A 1-inch layer of coarse bedding sand is standard for paver installation. To calculate: (Area in sq ft × 1 inch ÷ 12 inches per foot) ÷ 27 cubic feet per cubic yard = cubic yards needed. For a 192 sq ft patio: (192 × 0.0833) ÷ 27 = 0.59 cubic yards. Always use coarse concrete sand (ASTM C33) — not play sand or mason sand, which compact poorly and cause pavers to shift over time.
Polymeric sand is a blend of fine sand and polymer binders that activates with water to create a firm, flexible joint. Unlike regular sand, polymeric sand resists washing out in rain, deters weed growth, and prevents ant infiltration. One 50-pound bag covers approximately 50–75 square feet depending on joint width and paver size. Reapply every 3–5 years as joints may thin over time. Never apply polymeric sand to wet pavers — it stains permanently.
Yes — edge restraints are not optional. Without them, the outer edge pavers gradually migrate outward as foot traffic pushes them, joints at the edges open up, and eventually interior pavers start shifting too. Install aluminum or high-density polyethylene paver edging along all exposed patio edges before you lay a single paver. Anchor the edging to the compacted gravel base with 10-inch steel spikes every 12 inches. Edges that terminate against a wall, house foundation, or existing concrete do not need additional edge restraint there.