Effective 7 October 2026.
What the tools provide
These free tools estimate quantities from the inputs you choose. They are intended for ordinary non-structural garden planning. They do not design structures, certify installation methods, prescribe safe layer depths or assess drainage, loads or ground conditions.
Check before buying
You are responsible for checking measurements, product units, density and applicable allowances. Suppliers may round bulk orders differently or charge minimum quantities, delivery and tax. Optional prices are your inputs, not verified quotations. No calculation places an order.
Material uncertainty
Geometric calculations and material estimates are different. Weight and loose-volume adjustments depend on product and condition. Confirm suitability and the final order with your supplier or a qualified professional where the project requires one.
Using and sharing outputs
You may use and print the generated quantities and shopping lists for your own projects. The original site text, illustrations and design should not be republished as your own website. Linking to a calculator is welcome.
Availability and corrections
Tools may change or be temporarily unavailable. We aim for clear, checked calculations but cannot promise that every estimate suits every real-world situation. Nothing here excludes rights or liabilities that applicable law does not allow to be excluded. See Help & contact for current assistance and contact availability.