What this calculator does
A paving cost estimate calculator works out the likely cost of a paving job from three things: the area you are covering, the price of the paving material per square metre, and, if you are hiring someone, a labour price per square metre. It also adds a waste allowance, because pavers are cut to fit edges and corners and offcuts are rarely reusable.
The figures that go in are entirely up to you. Paver prices vary enormously by material, style and supplier, and labour rates vary by region and by tradesperson, so this tool does the arithmetic on whatever quotes or price lists you supply, rather than assuming a rate that would go stale.
The formula
Material cost is the area multiplied by a waste factor (1 plus the waste percentage), multiplied by the material price per square metre. Labour cost is the plain area multiplied by the labour price per square metre, since a tradesperson is generally paid for the finished area rather than for the offcuts. The two are added for a total, which is also expressed as an overall cost per square metre.
| Term | Meaning |
|---|---|
| Waste allowance | Extra material bought to cover cuts, breakages and awkward edges, expressed as a percentage on top of the plain area. |
| Material area | The area actually purchased once the waste allowance is added, larger than the area actually paved. |
| Overall cost per m² | Total cost (material plus labour) divided by the plain area, useful for comparing against a single all-in quote. |
The inputs explained
| Field | What to enter |
|---|---|
| Area to pave (m²) | The plain area to be paved, in square metres, before any waste allowance. |
| Paving material price ($/m²) | The price of the paving material itself, per square metre, from a supplier quote or price list. |
| Waste / cutting allowance (%) | Typically 5 to 15% for straightforward rectangular areas, and higher for complex shapes, curves or diagonal laying patterns. |
| Labour price (0 if doing it yourself) ($/m²) | A labour price per square metre from a quote. Set this to 0 if you are laying the paving yourself. |
When to use it
Budgeting a patio or driveway
Before committing to a supplier, running the area and a couple of candidate material prices through this calculator gives a realistic budget range, including the waste that quotes sometimes leave out.
Comparing a DIY job against hiring a tradesperson
Setting labour price to 0 shows the material-only cost of doing the paving yourself, which can then be compared against a full quote that includes labour.
Checking a paving cost calculator quote against a supplier
If a supplier or tradesperson gives an all-in price per square metre, comparing it against the overall cost per m² this calculator produces checks whether the quote lines up with the separate material and labour prices behind it.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the total cost changes with area at a fixed material and labour price
The same per-m² prices, applied to a range of paved areas.
| Area to pave | Estimated total cost | Material cost | Labour cost |
|---|---|---|---|
| 10 m² | $845.00 | $495.00 | $350.00 |
| 15 m² | $1,267.50 | $742.50 | $525.00 |
| 20 m² | $1,690.00 | $990.00 | $700.00 |
| 30 m² | $2,535.00 | $1,485.00 | $1,050.00 |
| 50 m² | $4,225.00 | $2,475.00 | $1,750.00 |
| 80 m² | $6,760.00 | $3,960.00 | $2,800.00 |
How the total cost changes with the waste allowance
A fixed 20 m² job, across a range of waste allowances.
| Waste allowance | Estimated total cost | Material cost | Material area incl. waste allowance |
|---|---|---|---|
| 0% | $1,600.00 | $900.00 | 20.00 m² |
| 5% | $1,645.00 | $945.00 | 21.00 m² |
| 10% | $1,690.00 | $990.00 | 22.00 m² |
| 15% | $1,735.00 | $1,035.00 | 23.00 m² |
| 20% | $1,780.00 | $1,080.00 | 24.00 m² |
| 25% | $1,825.00 | $1,125.00 | 25.00 m² |
Questions
What waste allowance should I use?
There is no fixed figure; it depends on the shape of the area and the paver size and laying pattern. A simple rectangular area with standard pavers might need as little as 5%, while an area with curves, diagonals or a lot of cutting can need 15 to 20% or more. A supplier can usually advise a suitable figure for the specific job.
Does this include base preparation, such as excavation or sand and cement bedding?
No. This estimate covers only the paving material and, if entered, the labour to lay it. Base preparation, edging, drainage and any other site work are separate costs that would need to be added on top, using whatever prices apply for that work.
Why is the material cost based on a larger area than the space being paved?
Because the waste allowance is added to the area before working out material cost, reflecting that more material has to be purchased than the finished paved area, to allow for pieces cut away at edges and corners.
How is this different from a general area calculator?
A plain area calculator only gives you square metres. This tool takes that area and turns it into a cost estimate, using prices you supply, plus a waste allowance that a raw area figure on its own would not account for.
For the area of an irregular or multi-part space before pricing it here, see the general area tools under Geometry. Once you have a total budget figure, it can be compared against other renovation costs on the site.