Sand Sub-Base Calculator
Work out sharp sand and sub-base aggregate for paving foundations.
How We Calculate This
This calculator uses standard coverage rates and material densities for accurate estimates.
Frequently Asked Questions
Related Calculators
Paving Slab Calculator
Calculate how many paving slabs you need for a patio or path.
Gravel Calculator
Work out gravel quantities in tonnes or bulk bags for drives and paths.
Patio Area Calculator
Calculate patio area and materials for rectangular or L-shaped patios.
Stepping Stone Calculator
Work out stepping stone quantities and spacing for garden paths.
Block Paving Calculator
Calculate block paving quantities with wastage allowance.
Last updated: February 2026
All calculations are estimates based on standard gardening guidelines. Results may vary with soil conditions, climate, and plant varieties.