Convert Liters per Second to Gallons per Minute
1 liter per second (L/s) equals 15.85032314 US gallons per minute (GPM).
1 L/s = 15.85032314 GPM
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk liter per second to US gallon per minute converter to paste a column from Excel.
How to Convert Liter per Second to Gallon per Minute
- 1 L/s = 15.85032314 GPM
- 1 GPM = 0.0630901964 L/s
- Example: convert 15 L/s to GPM: 15 L/s = 15 × 15.85032314 GPM = 237.7548471 GPM
Formula
GPM = L/s × 15.85032314149
Derivation from SI units:
- 1 L/s = 10⁻³ m³ ÷ 1 s
- 1 GPM = 231 in³ ÷ 60 s = 0.003785411784 m³ ÷ 60 s = 6.30901964 × 10⁻⁵ m³/s
- 1 L/s = 0.001 m³/s ÷ 0.0000630901964 m³/s per GPM = 15.85032314149 GPM
Both units are defined exactly, so the factor is exact. Liter per Second definition: liter per second; Gallon per Minute definition: US gallon per minute.
Worked examples
- A reading of 5 L/s converts to 79.25161571 GPM.
5 L/s × 15.85032314 = 79.25161571 GPM - A value of 50 L/s is 792.5161571 GPM.
50 L/s × 15.85032314 = 792.5161571 GPM
Liter per Second to Gallon per Minute conversion table
| Liters per Second (L/s) | Gallons per Minute (GPM) |
|---|---|
| 0.1 L/s | 1.585032314 GPM |
| 0.5 L/s | 7.925161571 GPM |
| 1 L/s | 15.85032314 GPM |
| 2 L/s | 31.70064628 GPM |
| 2.5 L/s | 39.62580785 GPM |
| 5 L/s | 79.25161571 GPM |
| 7.5 L/s | 118.8774236 GPM |
| 10 L/s | 158.5032314 GPM |
| 15 L/s | 237.7548471 GPM |
| 20 L/s | 317.0064628 GPM |
| 25 L/s | 396.2580785 GPM |
| 50 L/s | 792.5161571 GPM |
| 75 L/s | 1188.774236 GPM |
| 100 L/s | 1585.032314 GPM |
| 250 L/s | 3962.580785 GPM |
| 500 L/s | 7925.161571 GPM |
| 1000 L/s | 15850.32314 GPM |
Where it's used
Liters per Second are used for ventilation rates per person (ASHRAE 62.1, EN 16798), while US gallons per minute appear in pump, well and irrigation ratings. Both measure volumetric flow rate (volume per unit time), so the conversion is a fixed factor.
Liter per Second to other flow rate units
| Conversion | 1 L/s equals |
|---|---|
| liter per second to cubic meter per second | 0.001 m³/s |
| liter per second to cubic meter per hour | 3.6 m³/h |
| liter per second to liter per minute | 60 L/min |
| liter per second to cubic centimeter per second | 1000 cm³/s |
| liter per second to cubic centimeter per minute | 60000 cm³/min |
| liter per second to sccm | 60000 sccm |
| liter per second to SLPM | 60 SLPM |
| liter per second to cubic foot per minute | 2.118880003 CFM |
| liter per second to US gallon per minute | 15.85032314 GPM |
Frequently asked questions
How many US gallons per minute are in 1 liter per second?
1 L/s = 15.85032314 GPM.
How do I convert liters per second to US gallons per minute?
Multiply the value in L/s by 15.85032314. For example, 15 L/s × 15.85032314 = 237.7548471 GPM.
Is the L/s to GPM conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "gallon [U.S.] per minute (gpm)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Liters per Second to Gallons per Minute. Retrieved October 17, 2026, from https://scientificconverters.com/flow-rate/liters-per-second-to-gallons-per-minute/
IEEE
Scientific Converters, "Convert Liters per Second to Gallons per Minute," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/flow-rate/liters-per-second-to-gallons-per-minute/