How many pavers do I need for a 12 × 16 ft patio?
For the worked example (12 × 16 ft patio, pavers that cover 0.5 sq ft each, 6 in base chosen for this example) the material list is Pavers: 423 pavers (calculated 422.4 pavers, based on 10% waste, 0.5 sq ft per paver); Base aggregate: 3.91 yd³ (calculated 3.556 yd³ before allowance, based on 6 in layer, 10% allowance); Bedding material: 0.65 yd³ (calculated 0.593 yd³ before allowance, based on 1 in layer, 10% allowance); Edge restraint: 56 linear ft (calculated 56 ft, based on full perimeter, no allowance added). Quantities to buy are whole units rounded up from the calculated amounts. Enter your own measurements in the calculator above for your exact list.
How to use this calculator
- Enter the patio length and width, or the area if you know it.
- Enter the size of one paver (or its coverage) from the product you chose.
- Enter the base and bedding depths for your installation. The starting values are only a planning point.
- Check the waste and allowance, then read the material list.
- Copy, print or share the list.
How this is calculated
- Area = length × width
- Pavers = round up (area × (1 + paver waste) ÷ coverage per paver)
- Base volume = area × base depth, × (1 + allowance), then ÷ 27 for cubic yards
- Bedding volume = area × bedding depth, × (1 + allowance), then ÷ 27
- Edging = 2 × (length + width)
Geometry is deterministic. Material coverage, density, installation waste and product yield can vary. We expose those assumptions so you can replace them with the values printed on the products you are actually buying. Treat every result as an estimate. Items on your list are labelled Calculated (straight from your measurements) or Estimated (depends on an assumption), and “Buy” quantities are whole units rounded up.
Sources
- Belgard – Technical Resource Guide (installation details). Its interlocking-paver guidance gives minimum base thicknesses that depend on use (thinner for pedestrian areas such as patios, thicker for driveways), a nominal 1 in bedding sand layer, and notes that freeze–thaw climates and site conditions can call for more excavation or base. This is why base depth has no default here: you choose it for your installation. The 1 in bedding depth is a planning starting value; follow your paver manufacturer’s instructions. Check the current edition of the guide for your product line.
Last reviewed: . See the methodology.
Assumptions
These starting values are used until you change them. They are typical, not universal. Check the label on the product you are buying.
| Assumption | Starting value | Where it comes from |
|---|---|---|
| Cubic feet in a cubic yard | 27 | Mathematical – 3 ft × 3 ft × 3 ft |
| Inches in a foot | 12 | Mathematical – Depth in inches ÷ 12 gives feet |
| Edge restraint length | Full perimeter | Mathematical – 2 × (length + width) for a rectangle |
| Paver length | You enter it | You enter it (product / supplier) |
| Paver width | You enter it | You enter it (product / supplier) |
| Coverage per paver | You enter it | You enter it (product / supplier) |
| Paver waste | 10% | Common planning default |
| Base depth (your choice) | You enter it | You enter it (product / supplier) |
| Bedding layer depth | 1 in | Common planning default |
| Base and bedding allowance | 10% | Common planning default |
| Joint sand coverage per bag (optional) | You enter it | You enter it (product / supplier) |
Worked example
A 12 × 16 ft patio, pavers covering 0.5 sq ft each, 10% waste, 6 in base (chosen for this example), 1 in bedding, 10% allowance:
- Pavers: 423 pavers (211.2 sq ft including 10% waste) · 10% waste, 0.5 sq ft per paver
- Base aggregate: 3.91 yd³ (105.6 cu ft) · 6 in layer, 10% allowance
- Bedding material: 0.65 yd³ (17.6 cu ft) · 1 in layer, 10% allowance
- Edge restraint: 56 linear ft · full perimeter, no allowance added
Common questions
How deep should the base be?
It depends on soil, climate and how the patio is used, so this tool does not say. Belgard’s technical guide, for example, gives different minimum base thicknesses for different uses and notes that freeze–thaw climates and site conditions can call for more. Choose the depth specified for your installation (4 in and 6 in are quick choices, not recommendations).
Does this design the patio?
No. It estimates material quantities only. Follow your paver manufacturer’s installation instructions and local requirements.
Why no joint-sand bag count by default?
Coverage per bag depends on the product, paver size and joint width. Enter the coverage from your product label to count bags.
Guides
- How Many Pavers Do I Need for a Patio?Patio area, paver size and waste turned into a paver count.
- How Much Paver Base Do I Need?Base volume from area and chosen depth, in cubic yards and tons.
- How Much Bedding Sand Do I Need Under Pavers?Bedding layer volume from area and depth, in yards and bags.
- How Much Concrete Do I Need for a Slab?Turn slab dimensions into volume and an order quantity.
- How Much Extra Material Should You Buy?Waste, overage and rounding: what an allowance is and what moves it.