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Tank Drain Time Calculator

Calculate how long it takes to drain a tank from one liquid level to another through a bottom orifice. Ideal for sizing drain valves, planning tank cleanouts, or verifying emergency drainage rates.

Initial Liquid Height (m)

Final Liquid Height (m)

Tank Cross-Section Area (m²)

Drain Orifice Area (m²)

Discharge Coefficient

Fill in the required fields to see your result.

Fluid Mechanics

Hydraulic Jump Calculator

Compute sequent depth, energy loss, and Froude number for a hydraulic jump in an open channel. Used by hydraulic engineers to design stilling basins and dissipate kinetic energy in spillways.

Initial Depth (y1) (m)

Initial Velocity (m/s)

Gravitational Acceleration (m/s²)

Fill in the required fields to see your result.

Key differences

	Tank Drain Time Calculator	Hydraulic Jump Calculator
Category	Fluid Mechanics	Fluid Mechanics
Inputs required	5	3
Result	Drain Time (seconds)	Sequent Depth (y2) (m)
What it does	Calculate how long it takes to drain a tank from one liquid level to another through a bottom orifice. Ideal for sizing drain valves, planning tank cleanouts, or verifying emergency drainage rates.	Compute sequent depth, energy loss, and Froude number for a hydraulic jump in an open channel. Used by hydraulic engineers to design stilling basins and dissipate kinetic energy in spillways.