How to use
- Add non-overlapping rectangular areas and any positioned rectangular exclusions. Use one paver product and layer specification per estimate.
- Choose unit dimensions and joint width, or enter product pack coverage. Set the paver allowance and whether whole packs must be purchased.
- Enable base and bedding sand as needed. Enter depths and any required loose-volume factor, density or bag mass for the selected purchase method.
- Inspect each material separately. Enter its correct price basis and keep missing quantities or prices visibly unknown.
Calculation method
Net area subtracts exclusions from the included rectangles. Paver size mode uses the repeating face module, including the selected joint, to derive a unit estimate; pack mode uses entered label coverage. Allowance and whole-unit or pack rounding determine the purchase. Base and bedding each use net area × entered depth, followed by their own stated loose-volume or allowance assumptions. Density converts volume to mass only when supplied; bag ordering also requires bag mass. Costs use the relevant complete purchase quantities.
Worked example
A 4 × 3 m net paving area is 12 m². With a label coverage of 2 m² per pack and a 10% paver allowance, the 13.2 m² target requires seven packs, supplying 14 m². Independently, a 100 mm compacted base is 1.2 m³ geometrically and a 25 mm bedding layer is 0.3 m³. These layer volumes do not establish the loose aggregate order unless the applicable conversion inputs are supplied.
Assumptions and limits
The same layers apply to every area; exclusions remove all included layers. The tool does not optimize paving patterns, design loading capacity, drainage, falls or excavation, or add edge restraints, geotextile and jointing material. Bedding sand and jointing sand are separate uses. Different products or layer specifications need separate estimates.
Continue your plan
Check the footprint with the area calculator, compare aggregate ordering in the gravel calculator, or calculate separate poured elements with the concrete calculator.
Copy, download or print a valid result to keep the inputs with the estimate. Currency selections label your prices; they do not apply an exchange rate. Product-dependent examples should be replaced with data for the material or equipment you actually use.
For the measurement and planning details, read planning paving, base aggregate and bedding sand.