Geometry & drainage
Measured bucket flow
- where
- flow (m³/s; the calculator shows L/min)
- collected volume (m³; any unit you pick is converted)
- collection time (s)
Explain this equation
Works out the flow rate at an outlet using a container and a timer. Use it for quick flow checks on taps, showers and mains.
V is the volume collected. t is the time it took to collect.
Flow is volume divided by time. The calculator shows L/min.
Sense check: 10 L in 30 s is 20 L/min. A 10 L bucket filling in 60 s is 10 L/min.
Watch out: the result applies only at the conditions measured. It does not show supply pressure or what will happen with several outlets running.
Enter your values to see the result.
Good to know
Flow at the measured conditions; does not establish supply pressure or simultaneous-use performance.
Sources
Results are arithmetic only. Worked examples are not recommended design settings. This library does not provide automatic gas pipe selection, live gas tightness tests, purging procedures, combustion acceptance limits, installation approval or commissioning certification. Manufacturer data and the applicable current method remain essential.