Concrete, Brick & Masonry calculator
Paver Base Calculator
Estimate compacted base-course volume beneath paving from the paved area, planned sub-base depth and an allowance for site variation.
Estimate compacted base-course volume beneath paving from the paved area, planned sub-base depth and an allowance for site variation. The tool is designed for transparent planning: you can see the measurements, product assumptions and allowance that drive the result. Review average installed thickness before ordering or setting out. Small changes in thickness have a large effect over a big floor area. Use the finished average depth rather than the deepest local low spot unless you are deliberately allowing for it.
What you need to enter
The Paver Base Calculator uses the following project information to calculate the result.
- Length
- Width
- Depth / thickness
- Extra allowance (%)
Calculator result
Volume required
How the Paver Base Calculator works
Calculation logic: length × width × depth × allowance. For base-course volume beneath pavers, the Paver Base Calculator uses that method after normalising the entered units. The output is then converted for display. The practical assumption that deserves the closest check is average installed thickness.
Paver Base Calculator worked example
Paver Base Calculator example: A 30 m² paved drive with a 150 mm compacted base needs 4.50 m³ of finished base-course volume. Loose delivery volume can be higher, so compare the result with the aggregate supplier's compaction guidance. After calculating, compare the result with the job conditions and especially average installed thickness before rounding or selecting materials.
Important calculation assumptions
For base-course volume beneath pavers, small changes in thickness have a large effect over a big floor area. Use the finished average depth rather than the deepest local low spot unless you are deliberately allowing for it.
Frequently asked questions
What should I write down before calculating with the Paver Base Calculator?
Measure length, width and—most importantly—the average installed thickness. Convert millimetres or inches consistently before multiplying. The Paver Base Calculator then applies those figures to base-course volume beneath pavers.
How can errors in average installed thickness change the Paver Base Calculator result?
In the Paver Base Calculator, errors in average installed thickness can materially affect the result. Small changes in thickness have a large effect over a big floor area. Use the finished average depth rather than the deepest local low spot unless you are deliberately allowing for it.
How should I turn the Paver Base Calculator result into an order quantity?
Once the Paver Base Calculator has produced a result, use the calculated volume with the exact product yield to determine bags or bulk quantity. Floor variation can increase average depth, so avoid ordering to the theoretical minimum.