GPM to Liters per Second Converter
Enter the flow rate in gpm below to convert it to liters per second.
Convert GPM (US) to Liters per Second
Enter a value in gpm (us) (GPM) to convert to liters per second (L/s).
US Gallons per Minute to Liters per Second Conversion Table
Table showing various us gallons per minute measurements converted to liters per second. Click any preset value or arrow to load it into the converter.
| GPM (US) (GPM) | Liters per Second (L/s) |
|---|---|
| 1 GPM | 0.0630902 L/s |
| 2 GPM | 0.1261804 L/s |
| 2.5 GPM | 0.1577255 L/s |
| 5 GPM | 0.315451 L/s |
| 10 GPM | 0.630902 L/s |
| 15 GPM | 0.9463529 L/s |
| 20 GPM | 1.2618039 L/s |
| 25 GPM | 1.5772549 L/s |
| 30 GPM | 1.8927059 L/s |
| 50 GPM | 3.1545098 L/s |
How to Convert GPM to Liters per Second
To convert gpm to liters per second, multiply the flow rate by the following conversion ratio: 0.0630902 liters per second/us gallons per minute.
Since one us gallons per minute is equal to 0.0630902 liters per second, you can use this simple formula to convert:
The flow rate in liters per second is equal to the flow rate in gpm multiplied by 0.0630902.
For example, here's how to convert 5 gpm to liters per second using the formula above.
How Many Liters per Second Are in a US Gallons per Minute?
There are 0.0630902 liters per second in a us gallons per minute, which is why we use this value in the formula above.
Our us gallons per minute to liters per second calculator automatically converts your flow rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
GPM and liters per second are both units used to measure flow rate. Keep reading to learn more about each unit.
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). [1]
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.
What Is a Liters per Second?
A liters per second is a unit of flow rate equal to 60 liters per minute (L/min), the base unit for flow rate. Equal to 60 L/min. [2]
The liters per second is classified as a metric and SI-compatible unit of flow rate. Liters per Second can be abbreviated as L/s; for example, 1 liters per second can be written as 1 L/s.
When working with liters per second (L/s) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, liters per second (L/s) are widely used across standard flow rate applications within SI metric workflows, engineering documentation, and technical data sheets.
When converting flow rate between gpm (GPM) and liters per second (L/s), keep full floating-point precision (1 GPM = 0.0630902 L/s; 1 L/s = 15.8503231 GPM) during intermediate calculations and round only the final liters per second figure to match your instrument tolerance.
More US Gallons per Minute & Liters per Second Conversions
Need to calculate in the opposite direction? Use our liters per second to gpm (us) calculator to switch your starting unit immediately. You can also explore related tools such as converting liters per second to gpm (us), converting gpm (us) to liters per minute, or converting gpm (us) to m³/s.
Convert from GPM
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 — GPM (US) (GPM) to Liters per Second (L/s)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Volume & Flow Capacity)·Unit Specifications: US Gallons per Minute (GPM) (GPM) & Liters per Second (L/s)
- [3]BIPM ReferenceBIPM (Coherent Volumetric Flow Units (m³/s))·Conversion Factors & Mathematical Basis (GPM to L/s)