What this calculator does
Pavers & bedding sand works out number of pavers and bedding sand volume for a patio or path. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaPavers = area ÷ (paver length × paver width), plus waste; sand = area × bedding depth
The inputs explained
| Field | What to enter |
|---|---|
| Area to pave (m²) | A number, measured in m². Starts at 20. |
| Paver length (cm) | A number, measured in cm. Starts at 40. |
| Paver width (cm) | A number, measured in cm. Starts at 40. |
| Bedding sand depth (mm) | A number, measured in mm. Starts at 30. |
| Waste allowance (%) | A number, measured in %. Starts at 10. |
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 answer changes with area to pave
Every other input is held at the calculator’s starting values while area to pave varies. Select any row to load that scenario into the calculator.