Volumetric flow
Convert US gallon per minute (US gpm) to US gallon per hour (US gph). Volumetric flow rate is the volume of fluid passing a point per unit time — the basis for line sizing, pump duty, and instrument ranging.
1 US gpm = 60 US gph
To convert US gallon per minute to US gallon per hour, multiply the US gpm value by 60. To go the other way, divide by 60 (or multiply by 0.01666667).
| US gpm | US gph |
|---|---|
| 1 | 60 |
| 2 | 120 |
| 5 | 300 |
| 10 | 600 |
| 25 | 1500 |
| 50 | 3000 |
| 100 | 6000 |
| 250 | 15000 |
| 500 | 30000 |
| 1000 | 60000 |
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.
Volumetric flow depends on temperature and pressure for gases — convert on the same basis (actual vs standard) to avoid errors.
Worked example. A flow rate of 15850.32 US gpm is 951019.4 US gph.
Multiply the value in US gpm by 60 to get US gph. For example, 10 US gpm = 600 US gph.
1 US gpm equals 60 US gph.
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.