Foundation / Footing Calculator

Calculate concrete volume, excavation and ballast for foundation trenches and footings.

Concrete for a 2m by 1m footing at 100mm deep

For a footing measuring 2 metres by 1 metres at 100mm deep, this estimate includes concrete volume and ballast using the default foundation settings below.

  • Concrete volume0.20 m³
  • Including wastage0.22 m³
  • Approx ballast needed0.39 tonnes

Results - Foundation / Footing Calculator

  • Concrete volume0.20 m³
  • Including wastage0.22 m³
  • Approx ballast needed0.39 tonnes

How this footing calculator works

It multiplies length, width and depth to estimate concrete volume, then adds a sensible allowance for wastage and uneven trench conditions.

Disclaimer

Material quantities shown are estimates for guidance only. Although typical UK wastage and compaction allowances have been included, actual requirements may vary depending on site conditions, installation methods, and material differences. Please confirm quantities with your installer or supplier before ordering. We accept no liability for inaccuracies, financial loss, or delays arising from the use of these estimates.