Convert Liters per second to Gallons per minute
Instantly convert Liters per second (L/s) to Gallons per minute (GPM) with our free online calculator.
Formula: L/s to GPM — multiply by 15.8503
Reference Table
| Liters per second (L/s) | Gallons per minute (GPM) |
|---|---|
| 1 | 15.8503 |
| 5 | 79.2516 |
| 10 | 158.503 |
| 25 | 396.258 |
| 50 | 792.516 |
| 100 | 1585.03 |
How to Convert Liters per second to Gallons per minute
Formula
To convert Liters per second (L/s) to Gallons per minute (GPM): multiply by 15.8503
Step-by-Step
- Start with your value in Liters per second (L/s).
- Multiply by 15.8503 to perform the conversion.
- The result is your value expressed in Gallons per minute (GPM).
Conversion Factor
1 L/s = 15.8503 GPM
Reverse Factor
1 GPM = 0.0630902 L/s
Worked Example
Convert 25 Liters per second to Gallons per minute: 25 L/s = 396.258 GPM
About Liter per second (L/s)
A metric flow-rate unit equal to exactly 0.001 m³/s. L/s is the typical unit for plumbing fixtures in metric-using countries, the SI-aligned sizing unit for water-supply mains (per ISO 4064 water meter specs and EN 805 European water-supply standard), fire-pump capacities (often dual-listed in L/s and m³/hr on European fire-rated pumps), and medium-flow industrial processes. Reference values: a typical kitchen faucet flows 0.1-0.15 L/s, a metric shower head 0.13-0.20 L/s, a 50 mm domestic-water service ~3-5 L/s, a 100 mm fire-hydrant supply main 30-60 L/s. Converting L/s to GPM (US gallons per minute) is multiply by 15.85 — one of the most-needed unit conversions for buyers of imported European pump/plumbing equipment specifying performance in metric units. 1 L/s = 60 L/min = 3.6 m³/hr.
About Gallon per minute (GPM)
A US customary flow-rate unit (US gallons per minute, where 1 US gallon = 3.785411784 liters per NIST SP 811) used universally in US plumbing, HVAC, fire protection, agricultural irrigation, and swimming-pool circulation. GPM is the primary US sizing unit for residential water softeners (the IAPMO Z601 test method rates ion-exchange capacity at a defined GPM), well-pump submersibles, lawn sprinkler design (the GPM at each emitter sets zone sizing), NFPA 13 fire-sprinkler systems (head-flow allocations in GPM), and pool circulation (turnover rates require X GPM × hours). Reference values: a US WaterSense-certified showerhead is ≤ 2.0 GPM, an older US showerhead is 2.5-3 GPM, a residential dishwasher is ~3-4 GPM peak, a 4-inch municipal fire hydrant delivers 500-1,500 GPM (NFPA test pressure 20 psi residual). 1 GPM = 3.7854 L/min = 0.06309 L/s. Care: US GPM ≠ Imperial GPM (a UK gallon is 4.54609 L, so 1 Imperial GPM = 1.201 US GPM).
Quick Facts
- 1 Liter per second equals 15.8503 Gallons per minute
- 1 Gallon per minute equals 0.0630902 Liters per second
- Liter per second is a unit of volumetric flow rate
- Gallon per minute is a unit of volumetric flow rate
- This conversion is commonly used in plumbing, HVAC systems, and chemical process engineering
- The Liter per second belongs to the metric system
- The Gallon per minute belongs to the imperial system
Common Liter per second to Gallon per minute Conversions
| Liters per second (L/s) | Gallons per minute (GPM) |
|---|---|
| 0.01 | 0.158503 |
| 0.1 | 1.58503 |
| 0.25 | 3.96258 |
| 0.5 | 7.92516 |
| 1 | 15.8503 |
| 2 | 31.7006 |
| 3 | 47.551 |
| 5 | 79.2516 |
| 10 | 158.503 |
| 15 | 237.755 |
| 20 | 317.006 |
| 25 | 396.258 |
| 50 | 792.516 |
| 75 | 1188.77 |
| 100 | 1585.03 |
| 250 | 3962.58 |
| 500 | 7925.16 |
| 1000 | 15850.3 |
| 5000 | 79251.6 |
| 10000 | 158503 |
Understanding Liters per second
The Liter per second (symbol: L/s) is a unit of volumetric flow rate. A metric flow-rate unit equal to exactly 0.001 m³/s. L/s is the typical unit for plumbing fixtures in metric-using countries, the SI-aligned sizing unit for water-supply mains (per ISO 4064 water meter specs and EN 805 European water-supply standard), fire-pump capacities (often dual-listed in L/s and m³/hr on European fire-rated pumps), and medium-flow industrial processes. Reference values: a typical kitchen faucet flows 0.1-0.15 L/s, a metric shower head 0.13-0.20 L/s, a 50 mm domestic-water service ~3-5 L/s, a 100 mm fire-hydrant supply main 30-60 L/s. Converting L/s to GPM (US gallons per minute) is multiply by 15.85 — one of the most-needed unit conversions for buyers of imported European pump/plumbing equipment specifying performance in metric units. 1 L/s = 60 L/min = 3.6 m³/hr.
It belongs to the metric measurement system.
Liters per second are commonly used in plumbing, HVAC systems, and chemical process engineering.
Understanding Gallons per minute
The Gallon per minute (symbol: GPM) is a unit of volumetric flow rate. A US customary flow-rate unit (US gallons per minute, where 1 US gallon = 3.785411784 liters per NIST SP 811) used universally in US plumbing, HVAC, fire protection, agricultural irrigation, and swimming-pool circulation. GPM is the primary US sizing unit for residential water softeners (the IAPMO Z601 test method rates ion-exchange capacity at a defined GPM), well-pump submersibles, lawn sprinkler design (the GPM at each emitter sets zone sizing), NFPA 13 fire-sprinkler systems (head-flow allocations in GPM), and pool circulation (turnover rates require X GPM × hours). Reference values: a US WaterSense-certified showerhead is ≤ 2.0 GPM, an older US showerhead is 2.5-3 GPM, a residential dishwasher is ~3-4 GPM peak, a 4-inch municipal fire hydrant delivers 500-1,500 GPM (NFPA test pressure 20 psi residual). 1 GPM = 3.7854 L/min = 0.06309 L/s. Care: US GPM ≠ Imperial GPM (a UK gallon is 4.54609 L, so 1 Imperial GPM = 1.201 US GPM).
It belongs to the imperial measurement system.
Gallons per minute are commonly used in plumbing, HVAC systems, and chemical process engineering.
Why Convert Liters per second to Gallons per minute?
Converting between Liters per second and Gallons per minute is a frequent requirement for engineers, scientists, and students working with volumetric flow rate values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate volumetric flow rate conversion is essential.
Frequently Asked Questions
How do I convert Liters per second to Gallons per minute?
A metric flow-rate unit equal to exactly 0. To convert Liters per second to Gallons per minute, multiply by 15.8503. For example, 25 L/s equals 396.258 GPM.
How many Gallons per minute are in 1 Liter per second?
There are 15.8503 Gallons per minute in 1 Liter per second.
How many Liters per second are in 1 Gallon per minute?
There are 0.0630902 Liters per second in 1 Gallon per minute.
What is the formula for Liter per second to Gallon per minute conversion?
The formula is: multiply by 15.8503. This means 1 L/s = 15.8503 GPM.
Is a Liter per second bigger than a Gallon per minute?
No. One Liter per second is smaller than one Gallon per minute because 1 L/s equals 15.8503 GPM, which is greater than 1.
When do you need to convert between Liters per second and Gallons per minute?
A US customary flow-rate unit (US gallons per minute, where 1 US gallon = 3. Liter per second and Gallon per minute are both volumetric flow units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.