Paver Calculator — Patio Layout, Base & Packs
Plan a patio or path: compare straight paver layouts, count cuts and estimate base, bedding, packs and supplier costs.
PATIO & PATH MATERIALS
Plan your paving order
Keep the paved surface, extended base and supplier pack coverage separate.
7 packs
126 sq ft including 5% allowance · 140 sq ft purchased. Order meets both coverage and 126 stones including allowance.
Pale green: whole stones. Gold: cut pieces. Outer tan area: extended base. No reuse of offcuts.
1. Measure the finished area
2. Compare a straight layout
One rectangular paver size. Enter actual face dimensions; joint width is added separately. No border course or reuse of offcuts.
3. Enter your specified layers
Example depths are editable planning inputs, not a construction specification.
4. Use the supplier’s pack coverage
5. Add supplier quotes (optional)
Use coverage for your stone size, joint width and joint depth. Prices stay in USD when dimensions change.
Straight-layout cut list
120 stones before spare allowance · 99 whole · 21 cut. Smallest edge: 10.625 in.
- 12 × 12 in · whole
- 99
- 12 × 10.875 in · cut
- 11
- 10.625 × 12 in · cut
- 9
- 10.625 × 10.875 in · cut
- 1
Sizes are retained pieces, before saw-kerf or fitting allowances. Each cut piece uses a new stone in this count. Enter pieces per pack to check the order against both area coverage and the number of stones needed for this layout.
Your material list
- Finished paving
- 120 sq ft
- Extended base footprint
- 143 sq ft
- Base — compacted
- 2.648 cu yd
- Base — purchase volume
- 3.31 cu yd
- Bedding — purchase volume
- 0.407 cu yd
- Edge restraint
- 44 ft
- Coverage left after allowance
- 14 sq ft
- Stones purchased
- 140
- Packs by coverage / pieces
- 7 / 7
- Joint mix
- Supplier coverage needed
- Paving packs cost
- Quote not entered
Joint sand needs the selected product’s coverage. Border courses, mixed-size cuts and reuse of offcuts are not calculated by this prototype.
How the paving estimate works
Start with the finished rectangle: area = length × width. The base footprint adds the specified extension only along checked open edges. Compacted base volume = extended footprint × base depth. Bedding volume uses the finished paved area, without the extension.
Purchase volumes multiply these layer volumes by their separate allowances. An allowance of 25% means multiplying by 1.25; it does not mean that any particular aggregate will compact by 25%. Ask the supplier how to convert your specified compacted volume into an order.
Coverage and stone counts are separate checks
Coverage packs = round up [finished area × (1 + paver allowance ÷ 100) ÷ coverage per pack]. When pieces per pack is entered, stone-count packs = round up [round up(layout stones × (1 + allowance ÷ 100)) ÷ pieces per pack]. The order uses the larger pack count.
The straight-layout count includes every whole stone and every separate cut piece. Each cut consumes a new stone; offcuts are not reused. The extra allowance remains a separate provision for breakage and spares. If pieces per pack is unknown, the coverage result alone cannot confirm that the order contains enough stones for all cuts.
Worked patio example
A 12 × 10 ft patio has 120 sq ft of paving. Extending the base 6 in on all four sides gives 13 × 11 ft, or 143 sq ft. At a specified 6 in compacted depth, that is 71.5 cu ft; adding an illustrative 25% purchase allowance gives 89.375 cu ft, about 3.31 cu yd.
With 5% paver allowance, the coverage target is 126 sq ft. Packs covering 20 sq ft require 7 packs, providing 140 sq ft. This example uses 12 × 12 in faces, ⅛ in joints and 20 stones per pack; change these values to match your product.
What this calculator does not specify
Layer depths, base extensions and material allowances are editable examples, not universal installation requirements. Soil, frost, drainage and vehicle loads can change the necessary construction. Follow the product instructions and your project specification.
The diagram covers one rectangular area and one rectangular stone size in a straight grid. Mixed-size patterns, herringbone, border courses, irregular boundaries, saw kerf and offcut optimisation need a separate layout. Joint mix is estimated only from the coverage you supply. The price result covers paving packs only, excluding other materials, delivery, tax and labour unless included in your quoted pack price.
Need to order the aggregate by weight or compare bag and bulk delivery? Use the gravel calculator with the same base dimensions and your supplier’s density. Apply the purchase allowance once; do not add it again to a volume that already includes it.
For indoor tile layouts, use the tile calculator.
