Calculate internal volume and fill capacity for pipes of any diameter and length.
For estimation purposes only. Terms of Use
A 450mm diameter pipe, 100m long, 100% full:
Use this for estimating fill volumes for hydrostatic testing, flushing requirements, pump sizing, or understanding storage capacity for culverts and storm sewer pipes.
This does not calculate flow rate or hydraulic capacity under pressure or gravity flow — those require Manning's equation or similar hydraulic calculations, not just volume.
Always use internal diameter for volume calculations — this is the actual space available for water or material, not including pipe wall thickness.
Use the fill percentage field — note this calculator assumes a simplified linear percentage, not the more complex circular segment geometry of actual partial-flow conditions.