Work out building volume instantly with clear inputs, formula shown and shareable results.
Gross building volume is footprint area times the number of floors times floor to floor height, with any basement added as footprint times its depth. Volume drives ventilation and heating load calculations and is the basis of cost per cubic metre benchmarking for warehouses and industrial buildings.
Building volume
m³ = footprint x floors x floor height + footprint x basement depth
m³ = footprint x floors x floor height + footprint x basement depth. Gross building volume is footprint area times the number of floors times floor to floor height, with any basement added as footprint times its depth.
For tall single-storey buildings the cost is driven by cladding and structure height rather than floor area, so volume correlates better with cost than area does.
This calculator takes 4 inputs: Building footprint, Number of floors above ground, Floor to floor height, Basement depth. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.