Water & Hydropower Calculators

Educational tools for water volume, flow, pressure, usage, collection and basic hydropower equations.

Calculate rectangular or cylindrical tank capacity.

Estimate ideal circular-pipe flow from diameter and velocity.

Estimate hydraulic and efficiency-adjusted pump power.

Estimate hydrostatic pressure from water height and density.

Estimate roof runoff from area, rainfall and coefficient.

Estimate rectangular or circular pool volume.

Estimate group water usage across a number of days.

Estimate water power from flow, head and efficiency.

Estimate volume from surface area and average depth.

Compare output power with theoretical hydraulic power.