Tank Volume Calculator

Calculate water storage capacity from tank dimensions or determine suitable tank dimensions from the required storage capacity.

Calculation Mode

Tank Configuration

Existing dimensions are converted when the unit is changed.
Required Storage Capacity

Tank Dimensions

m
m
m
m
Vertical space above water level.
m
m
Example: 1.5 means length is 1.5 × width.
m
m
m
m
m
m
m
m
m
m
m
m
m

Calculation Information

  • Rectangular tank: V = L × B × H
  • Cylindrical tank: V = π × r² × H
  • Spherical tank: V = 4/3 × π × r³
  • Effective capacity is calculated after deducting the entered freeboard.
  • All calculations internally use metres and cubic metres to maintain consistent unit conversion.
Note: This calculator estimates geometric storage volume only. Structural design of RCC water tanks, reinforcement, wall thickness, hydrostatic pressure and stability should be handled separately.