Paver Calculator
This paver calculator estimates how many pavers to buy for a patio, walkway or residential driveway, and the tons of base aggregate and bedding sand that go under them. Enter the area, choose the paver (your own size, the pieces per square foot from the pallet label, or one of two pallet presets) and it adds waste, the dig depth and the length of edge restraint. It works as a paver patio calculator and a paver base calculator in one.
Quick answer: pavers = area × (1 + waste) × pieces per square foot, rounded up. A 15 × 12 ft patio is 180 sq ft. With 10% waste and 4.66 pavers per sq ft (a pallet figure) that is 922.7, so buy 923. The base is 4 in under a patio or walkway and 6 in under a driveway, plus 1 in of bedding sand. For 180 sq ft that is 3.83 tons of base and 0.75 tons of sand.
Pavers to buy depend on the area, the waste and how many pavers cover one square foot, which comes from the pallet label or from the paver size plus its joint. Multiply the area by (1 + waste) and by the pieces per square foot, then round up. Under them go a compacted aggregate base (4 in for a patio or walkway, 6 in for a residential driveway, as minimums for well-drained soil) and 1 in of bedding sand.
Example: a 15 × 12 ft patio is 180 sq ft. At 4.66 pavers per sq ft (a Pavestone Holland 60 mm pallet figure) and 10% waste that is 180 × 1.10 × 4.66 = 922.7, so buy 923 pavers. A 4 in base is 180 × 4 ÷ 12 ÷ 27 = 2.222 yd³, 2.556 yd³ with 15% to compact, or 3.83 tons at 1.5 tons per yd³. The 1 in of bedding sand is 0.75 tons.
Method
How this calculator works
The area and paver math is exact. The base and sand depths are installation minimums from the industry, and the two things that move the answer most are the pieces per square foot on your pallet and the soil and climate under the job.
Paver count
Multiply the area by (1 + waste) and by the pavers per square foot, and round up. With your own size the calculator uses the paver plus one joint on each axis. When you know the pallet figure, it wins: manufacturers round stated sizes or include spacer bars, so size math can be a few pavers off.
Area = Length × WidthPavers per ft² (own size) = 144 ÷ ((Length + Joint) × (Width + Joint)), in inchesPavers per ft² (pallet) = pieces on the pallet ÷ square feet on the palletPavers = round up (Area × (1 + Waste ÷ 100) × Pavers per ft²)Layers and dig depth
The Concrete Masonry & Hardscapes Association (CMHA, which absorbed the ICPI) and Belgard list a minimum base of 4 in for patios and walkways and 6 in for a residential driveway, for well-drained soil, and say to increase it in colder climates or weak soils. The bedding layer is 1 in nominal, made of concrete sand (ASTM C33), not mason sand. The dig depth is the base, the sand and the paver thickness, which is 2 3/8 in (60 mm) unless you change it.
Dig depth = Base + Bedding sand + Paver thickness4 + 1 + 2.375 = 7.375 in for a patioTons of base and sand
Volumes are area × depth ÷ 12 ÷ 27 in cubic yards. The base adds 15% so it compacts to depth, and it is shown as its own step so it never stacks silently with paver waste. Tons use 1.5 tons per cubic yard for crushed stone base and 1.35 for dry sand. Those are conventions, so type your supplier's figures if they differ. Tons are short tons of 2,000 lb.
Base (yd³, loose) = Area × Base depth ÷ 12 ÷ 27 × (1 + Compaction ÷ 100)Base tons = Base yd³ × 1.5Sand tons = Area × Sand depth ÷ 12 ÷ 27 × 1.35Waste and edge restraint
Paver waste starts at 10%, or 15% for many curves, borders or half pavers, from one retailer's paver guide, so treat it as a convention. Edge restraint is the perimeter minus any side already held by a house or wall. No allowance for it is sourced, so the extra starts at 0%, and the calculator counts pieces only when you enter a piece length from the label.
Edge restraint = 2 × (Length + Width) − Edge against a structureBase depth: what the sources say
| Source | Patio or walkway | Residential driveway | Note |
|---|---|---|---|
| CMHA PAV-MAN-006-20 | 4 in | 6 in | Stated as a minimum, for well-drained soils. Increase it in colder climates or weak soils. |
| Belgard Technical Resource Guide | 4 in | 6 in | Same minimums. Its installation text says 4 to 8 in or more if the design requires it. |
| ICPI Tech Spec 10 (revised 2004) | 4 to 6 in | 6 to 8 in | An older ICPI specification hosted by a retailer. |
| Menards paver guide | 4 in | 8 in minimum | Retailer guide. It says to see local code. |
| General Shale technical bulletin (2014) | Not stated | 4 in minimum | A manufacturer bulletin for a driveway section under 60 to 90 mm pavers. |
| This calculator by default | 4 in | 6 in | The lowest common minimums, editable in Base depth override. |
Pavers per square foot printed on pallets
| Product | What the document prints | Per sq ft | In the calculator |
|---|---|---|---|
| Pavestone Holland 60 mm (7.87 × 3.94 × 2.36 in) | 480 pieces and 103 sq ft per pallet | 4.66 | Preset. Size math without joints gives 4.64. |
| Rochester Concrete Products Holland (8.5 × 4.25 × 2 3/8 in) | 400 pieces and 98 sq ft per pallet | 4.08 | Preset. Size math on the stated size gives 3.99. |
| "4×8 Holland Paver" use and care guide (7.75 × 3.88 × 1.77 in) | "Units/sq.ft.: 4.8 units" | 4.8 | Enter it under Pallet label. The guide says dimensions and availability vary by manufacturer. |
What each field does
| Field | What to enter |
|---|---|
| Which paver? | Own size (length × width), Pallet label (pieces per ft²), Pavestone Holland 60 mm or Rochester Holland. |
| Area length and Area width | The patio, walkway or driveway footprint, in feet and inches or in meters. Add areas of different shapes first with the Square Footage Calculator. |
| Use | Patio or walkway (4 in base) or Residential driveway (6 in base). It sets the base depth, with minimums for well-drained soil. |
| Paver length, Paver width and Joint width | For Own size only. The 8 × 4 in in the fields is an example, so use your paver's real size. 1/8 in is a common joint, or 0 if spacer bars are in the size. |
| Pieces per square foot | For Pallet label: the pieces on the pallet divided by the square feet on the pallet. |
| Paver thickness | Starts at 2 3/8 in (60 mm). It only changes the dig depth. |
| Base depth override | Optional. Replaces the 4 or 6 in. Cold climates and weak soil need more. |
| Bedding sand depth | Starts at 1 in nominal, concrete sand (ASTM C33). |
| Paver waste | Starts at 10%. Typical, not a standard: 10%, or 15% with curves or borders. 0 to 40%. |
| Base compaction allowance | Starts at 15%. Extra loose base so it compacts to depth. |
| Base density and Sand density | Short tons per cubic yard: 1.5 for the base and 1.35 for the sand. Your supplier's figure wins. |
| Base extension past the pavers | Starts at 0, which means none. CMHA says 6 in; other guides say 8 to 12 in. It is added on every side. |
| Edge against a house or wall | Optional. Sides already held in place need no edge restraint. |
| Extra edge restraint | Starts at 0%, because no allowance is sourced. |
| Edge restraint piece length | Optional, from the product label. Empty shows the length only. |
Worked example: a 15 × 12 ft patio
Arithmetic checkedThese are the calculator's own example values: the Pavestone Holland 60 mm pallet figure, 10% waste, a 4 in base, 15% compaction, 1 in of sand, and one 15 ft side against the house.
| Step | Math | Result |
|---|---|---|
| Area | 15 × 12 | 180 sq ft |
| Pavers per square foot | 480 ÷ 103, the pallet figure | 4.66 |
| Pavers, before rounding | 180 × (1 + 10 ÷ 100) × 4.66 | 922.68 |
| Pavers to buy | rounded up | 923 pavers |
| Dig depth | 4 + 1 + 2.375 | 7.375 in |
| Base, loose | 180 × 4 ÷ 12 ÷ 27 × (1 + 15 ÷ 100) | 2.556 yd³ |
| Base aggregate weight | 2.556 × 1.5 | 3.83 tons |
| Bedding sand | 180 × 1 ÷ 12 ÷ 27 × 1.35 | 0.75 tons |
| Edge restraint | 2 × (15 + 12) − 15 | 39 ft |
| You would see | 923 pavers to buy | |
Disclaimer
Results are planning estimates based on the dimensions and assumptions you enter. They are not engineering, structural or building-code advice. Product yields, densities and coverage vary by manufacturer, batch and site conditions. Check product labels, your supplier and your local building department before you order materials or start work. Read the full calculation disclaimer.
Accuracy
What affects your estimate
The formulas are simple. What changes the answer is the pallet figure, the base depth for your soil and climate, and the waste you plan for.
The pallet figure beats the size math
The same 180 sq ft patio with 10% waste takes 851 pavers for an 8 × 4 in paver with a 1/8 in joint (4.2965 per sq ft), 923 at the Pavestone figure of 4.66, 808 at the Rochester figure of 4.08, and 951 at 4.8 per sq ft. Always use the number for the paver you will buy.
A driveway needs a deeper base
A 12 × 30 ft driveway is 360 sq ft. With a 6 in base that is 360 × 6 ÷ 12 ÷ 27 = 6.667 yd³, 7.667 yd³ with 15% to compact, or 11.5 tons at 1.5 tons per yd³. The sand is 1.5 tons, the dig depth 9.375 in and the pavers 1,846 at 4.66 per sq ft.
The base depth is a minimum
Using 6 in under the 180 sq ft patio instead of 4 in raises the base from 3.83 to 5.75 tons. The 4 and 6 in figures are for well-drained soil, and cold climates and weak soils need more, so use Base depth override when your site calls for it.
Base extension
Extending the base 6 in past the pavers on every side turns 180 sq ft of base into 13 × 16 = 208 sq ft, which is 2.953 yd³ loose and 4.43 tons. The pavers and the sand still use 180 sq ft. It starts at none because the sources give 6, 8 and 12 in.
Waste for curves and borders
At 15% the same patio needs 965 pavers instead of 923. Curves, borders and half pavers take more cuts, and diagonal patterns do too, so raise the waste when your layout has them.
Edge restraint and what is not counted
A 15 × 12 ft patio with one 15 ft side against the house needs 39 ft of edge restraint. If the label says 6 ft pieces, 39 ÷ 6 = 6.5 rounds up to 7. Joint sand is not calculated because no volume rule is sourced, so read the bag, and slope, drainage and compaction are for the installer.
This calculator estimates pavers, base, sand and edge restraint for patios, walkways and residential driveways, using CMHA and ICPI minimum guidance for well-drained soil. It does not design a pavement: soil, frost, drainage, slope, traffic and edging type are not checked. Slope the surface away from buildings (about 1/4 in per ft), compact the base in lifts, and follow the paver maker and local code. For heavy vehicles, slopes or poor soil, ask a professional. See the calculation disclaimer.
Common mistakes
Leaving the example paver size in the fields
The 8 × 4 in paver is only an illustration. The calculator warns while it is unchanged, so enter your paver's size or the pieces per square foot from the pallet label.
Using nominal size when the pallet label is available
Stated sizes are rounded or include spacer bars. The pallet figure comes from real counts, so it wins over the size math.
Digging only as deep as the paver
The dig depth is the base, the bedding sand and the paver together: 7.375 in for a patio with a 4 in base. Excavating less leaves the finished surface too high.
Using mason sand or stone dust for bedding
The industry guidance is concrete sand to ASTM C33 for the 1 in bedding layer. Mason sand and stone dust are not used for bedding.
Treating 4 in as a rule for every site
It is a minimum for well-drained soil. Colder climates and weak soils need more, and the sources disagree on driveways, so check local practice and use Base depth override.
Questions people ask
How do I calculate how many pavers I need?
Multiply the area by 1 plus the waste, multiply by the pavers per square foot, and round up. A 12 × 15 ft patio at 10% waste and 4.66 per sq ft is 923 pavers. The guide on how many pavers you need works the same steps by hand.
How many pavers are in a square foot?
It depends on the paver. Printed pallet figures include 4.66 for a Pavestone Holland 60 mm and 4.08 for a Rochester Holland. For your own size, 144 ÷ ((length + joint) × (width + joint)) in inches gives the count, and the pallet label is better when you have it.
How deep should the base be for pavers?
The CMHA, ICPI and Belgard documents give a minimum of 4 in under patios and walkways and 6 in under residential driveways, for well-drained soil. Increase it in colder climates or weak soils. Other sources go to 8 in for driveways, so ask your installer or local building department.
How much base and sand do I need for a patio?
For 180 sq ft with a 4 in base, 15% compaction and 1.5 tons per yd³, the base is 3.83 tons. The 1 in bedding sand is 0.75 tons at 1.35 tons per yd³. To change a density, see the Cubic Yards to Tons Calculator or the Gravel Calculator.
How much extra should I buy for waste?
One retailer paver guide says 10%, or 15% with many curves, borders or half pavers. This calculator starts at 10% and lets you type 0 to 40%.
Does it calculate joint sand?
No. No volume rule for joint sand is sourced, so read the bag for your product. The bedding sand is counted, and it is separate from the sand that fills the joints.
Can I use it for a driveway?
Yes for a residential driveway, with its 6 in base. It does not check traffic loads, soil or drainage, and heavy vehicles, slopes or poor soil call for a professional.
Related calculators and guides
Sources
Where the numbers come from
- CMHA PAV-MAN-006-20, construction tolerances for interlocking concrete pavements minimum base thickness of 4 and 6 in for well-drained soil, 1 in nominal bedding sand, 6 in base extension, accessed October 17, 2026.
- CMHA PAV-TEC-009-13 guide specification (hosted by Rochester Concrete Products) concrete sand to ASTM C33 for bedding, edge restraint types, accessed October 17, 2026.
- Belgard Technical Resource Guide minimum base thickness, 1 in bedding sand, 4 to 8 in of base in its installation text, accessed October 17, 2026.
- ICPI Tech Spec 10 (revised June 2004) older base ranges of 4 to 6 in for walks and 6 to 8 in for driveways, accessed October 17, 2026.
- General Shale technical bulletin (2014) a driveway section with a 4 in compacted aggregate minimum, accessed October 17, 2026.
- Menards paver guide retailer guidance of 10% waste, 15% with curves or borders, and an 8 in driveway minimum, accessed October 17, 2026.
- Pavestone Holland paver data sheet (hosted by Lowe's) 480 pieces and 103 sq ft per pallet, accessed October 17, 2026.
- Rochester Concrete Products Holland paver cut sheet 400 pieces and 98 sq ft per pallet, accessed October 17, 2026.
- "4×8 Holland Paver" use and care guide (hosted by Lowe's) 4.8 units per sq ft, accessed October 17, 2026.
- NIST Handbook 44 (2026), Appendix C exact conversions for cubic yards and the metric view, accessed October 17, 2026.