GPH to m³/s Converter
Enter the flow rate in gph below to convert it to m³/s.
Convert GPH (US) to m³/s
Enter a value in gph (us) (GPH) to convert to m³/s (m³/s).
US Gallons per Hour to Cubic Meters per Second Conversion Table
Table showing various us gallons per hour measurements converted to m³/s. Click any preset value or arrow to load it into the converter.
| GPH (US) (GPH) | m³/s (m³/s) |
|---|---|
| 1 GPH | 0.000001052 m³/s |
| 10 GPH | 0.000010515 m³/s |
| 100 GPH | 0.00010515 m³/s |
| 1,000 GPH | 0.0010515 m³/s |
| 10,000 GPH | 0.010515 m³/s |
| 100,000 GPH | 0.1051503 m³/s |
| 1,000,000 GPH | 1.0515033 m³/s |
| 5,000,000 GPH | 5.2575164 m³/s |
| 10,000,000 GPH | 10.5150327 m³/s |
| 25,400,000 GPH | 26.7081831 m³/s |
How to Convert GPH to m³/s
To convert gph to m³/s, multiply the flow rate by the following conversion ratio: 0.000001052 m³/s/us gallons per hour.
Since one us gallons per hour is equal to 0.000001052 m³/s, you can use this simple formula to convert:
The flow rate in m³/s is equal to the flow rate in gph multiplied by 0.000001052.
For example, here's how to convert 5 gph to m³/s using the formula above.
How Many m³/s Are in a US Gallons per Hour?
There are 0.000001052 m³/s in a us gallons per hour, which is why we use this value in the formula above.
Our us gallons per hour to cubic meters per second calculator automatically converts your flow rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
GPH and m³/s 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 Cubic Meters per Second?
A cubic meters per second is a unit of flow rate equal to 60,000 liters per minute (L/min), the base unit for flow rate. Coherent SI flow unit equal to 1,000 L/s (60,000 L/min). [2]
The cubic meters per second is classified as an International System of Units (SI) unit of flow rate. m³/s can be abbreviated as m³/s; for example, 1 cubic meters per second can be written as 1 m³/s.
When working with m³/s (m³/s) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, m³/s (m³/s) are widely used across large-scale industrial, bulk, and macro-level flow rate specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting flow rate between gph (GPH) and m³/s (m³/s), keep full floating-point precision (1 GPH = 0.000001052 m³/s; 1 m³/s = 951,019.3884893 GPH) during intermediate calculations and round only the final cubic meters per second figure to match your instrument tolerance.
More US Gallons per Hour & Cubic Meters per Second Conversions
Need to calculate in the opposite direction? Use our m³/s to gph (us) calculator to switch your starting unit immediately. You can also explore related tools such as converting m³/s to gph (us), converting gpm (us) to m³/s, or converting liters per minute to gpm (us).
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 m³/s (m³/s)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Volume & Flow Capacity)·Unit Specifications: US Gallons per Hour (GPH) (GPH) & Cubic Meters per Second (m³/s)
- [3]BIPM ReferenceBIPM (Coherent Volumetric Flow Units (m³/s))·Conversion Factors & Mathematical Basis (GPH to m³/s)