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Both calculators run independently — change the inputs on either side to compare results.
Fluid Mechanics
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.
Fill in the required fields to see your result.
Fluid Mechanics
Orifice Flow Discharge Calculator
Calculates the volumetric flow rate through an orifice plate or opening given the upstream-to-downstream pressure difference. Used in flow metering, tank drainage design, and hydraulic control systems.
Fill in the required fields to see your result.
Key differences
| Tank Drain Time Calculator | Orifice Flow Discharge Calculator | |
|---|---|---|
| Category | Fluid Mechanics | Fluid Mechanics |
| Inputs required | 5 | 4 |
| Result | Drain Time (seconds) | Flow Rate (m³/s) |
| 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. | Calculates the volumetric flow rate through an orifice plate or opening given the upstream-to-downstream pressure difference. Used in flow metering, tank drainage design, and hydraulic control systems. |