Free Groundworks Calculators
Site-ready math for muddy hands. Calculate concrete, muck away, excavation volumes, and sub-bases instantly—100% free.
Concrete Slab Volume
Quickly calculate the exact cubic meters of C20/C30 concrete needed for any rectangular slab, including site wastage margins.
Open CalculatorPaving Sub-Base
Calculate MOT Type 1, Type 3, and Sharp Sand tonnages with exact compaction rates for driveways and patios.
Open CalculatorPipe Fall & Gradient
Calculate exact millimeter drops for drainage pipe runs to set up your pipe lasers instantly.
Open CalculatorMuck Away & Topsoil
Convert solid cubic meters of soil into loose muck away tonnage based on exact material bulking and compaction factors.
Open CalculatorTrench Builder (Basic)
Calculate standard trench excavation volumes and estimate 16T grab lorries instantly.
Open CalculatorManhole Logic (Basic)
Determine pit excavation requirements and spoil removal for standard square or circular manholes.
Open CalculatorNeed material breakdowns & site logs?
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