GPH to GPM Converter
Enter the flow rate in gph below to convert it to gpm.
Convert GPH (US) to GPM (US)
Enter a value in gph (us) (GPH) to convert to gpm (us) (GPM).
US Gallons per Hour to US Gallons per Minute Conversion Table
Table showing various us gallons per hour measurements converted to gpm. Click any preset value or arrow to load it into the converter.
| GPH (US) (GPH) | GPM (US) (GPM) |
|---|---|
| 1 GPH | 0.0166667 GPM |
| 2 GPH | 0.0333333 GPM |
| 2.5 GPH | 0.0416667 GPM |
| 5 GPH | 0.0833333 GPM |
| 10 GPH | 0.1666667 GPM |
| 15 GPH | 0.25 GPM |
| 20 GPH | 0.3333333 GPM |
| 25 GPH | 0.4166667 GPM |
| 30 GPH | 0.5 GPM |
| 50 GPH | 0.8333333 GPM |
How to Convert GPH to GPM
To convert gph to gpm, multiply the flow rate by the following conversion ratio: 0.0166667 gpm/us gallons per hour.
Since one us gallons per hour is equal to 0.0166667 gpm, you can use this simple formula to convert:
The flow rate in gpm is equal to the flow rate in gph multiplied by 0.0166667.
For example, here's how to convert 5 gph to gpm using the formula above.
How Many GPM Are in a US Gallons per Hour?
There are 0.0166667 gpm in a us gallons per hour, which is why we use this value in the formula above.
Our us gallons per hour to us gallons per minute calculator automatically converts your flow rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
GPH and gpm are both units used to measure flow rate. Keep reading to learn more about each unit.
What Is a US Gallons per Hour?
A us gallons per hour is a unit of flow rate equal to 0.0630902 liters per minute (L/min), the base unit for flow rate. Equal to 1/60 GPM (0.06309 L/min). [1]
The us gallons per hour is classified as a US customary unit of flow rate. GPH can be abbreviated as GPH; for example, 1 us gallons per hour can be written as 1 GPH.
When working with gph (GPH) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, gph (GPH) are widely used across standard flow rate applications within US customary workflows, engineering documentation, and technical data sheets.
What Is a US Gallons per Minute?
A us gallons per minute is a unit of flow rate equal to 3.7854118 liters per minute (L/min), the base unit for flow rate. Standard US plumbing & pump flow rate (3.78541 L/min). [2]
The us gallons per minute is classified as a US customary unit of flow rate. GPM can be abbreviated as GPM; for example, 1 us gallons per minute can be written as 1 GPM.
When working with gpm (GPM) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, gpm (GPM) are widely used across standard flow rate applications within US customary workflows, engineering documentation, and technical data sheets.
When converting flow rate between gph (GPH) and gpm (GPM), keep full floating-point precision (1 GPH = 0.0166667 GPM; 1 GPM = 60 GPH) during intermediate calculations and round only the final us gallons per minute figure to match your instrument tolerance.
More US Gallons per Hour & US Gallons per Minute Conversions
Need to calculate in the opposite direction? Use our gpm (us) to gph (us) calculator to switch your starting unit immediately. You can also explore related tools such as converting gpm (us) to gph (us), converting liters per minute to gpm (us), or converting gpm (us) to liters per minute.
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Volume Divided by Time))·Flow Rate Metrology Standard — GPH (US) (GPH) to GPM (US) (GPM)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Volume & Flow Capacity)·Unit Specifications: US Gallons per Hour (GPH) (GPH) & US Gallons per Minute (GPM) (GPM)
- [3]BIPM ReferenceBIPM (Coherent Volumetric Flow Units (m³/s))·Conversion Factors & Mathematical Basis (GPH to GPM)