L/min to GPM Converter
Convert Liters per Minute to Gallons per Minute instantly
Quick Conversions
Conversion Formula
Converting from liters per minute (L/min or LPM) to gallons per minute (GPM) requires a simple multiplication by the conversion factor. The relationship between these two flow rate units is fixed and universally accepted.
GPM = L/min × 0.264172
L/min = GPM × 3.78541
This conversion factor comes from the definition that 1 liter equals 0.264172 US gallons. Since both units measure flow rate per minute, the time component remains constant, making the conversion straightforward.
Conversion Examples
Example 1: Converting 15 L/min to GPM
Calculation: 15 × 0.264172 = 3.96258 GPM
This flow rate is typical for a standard kitchen faucet or a small pump system.
Example 2: Converting 50 L/min to GPM
Calculation: 50 × 0.264172 = 13.2086 GPM
This flow rate is commonly found in industrial applications, aquarium filtration systems, and medium-sized pumps.
Example 3: Converting 10 GPM to L/min
Calculation: 10 × 3.78541 = 37.8541 L/min
This represents a substantial flow rate often seen in commercial water systems and fire protection equipment.
Conversion Table
| Liters per Minute (L/min) | Gallons per Minute (GPM) |
|---|---|
| 0.1 | 0.0264 |
| 0.5 | 0.1321 |
| 1 | 0.2642 |
| 2 | 0.5283 |
| 3 | 0.7925 |
| 5 | 1.3209 |
| 10 | 2.6417 |
| 15 | 3.9626 |
| 20 | 5.2834 |
| 25 | 6.6043 |
| 30 | 7.9252 |
| 40 | 10.5669 |
| 50 | 13.2086 |
| 75 | 19.8129 |
| 100 | 26.4172 |
| 150 | 39.6258 |
| 200 | 52.8344 |
| 250 | 66.0430 |
| 500 | 132.0860 |
| 1000 | 264.1720 |
Common Applications
🚰 Plumbing & Water Systems
Flow rate measurements for faucets, showerheads, and water supply lines typically range from 2-20 L/min (0.5-5.3 GPM) for residential applications.
🏭 Industrial Pumps
Manufacturing processes and cooling systems often require precise flow rate specifications, with industrial pumps ranging from 50-500 L/min (13-132 GPM).
🐠 Aquarium Filtration
Aquarium filters are rated by their flow capacity, typically 200-2000 L/min (53-528 GPM) for large commercial aquariums.
⚕️ Medical Equipment
Oxygen concentrators and medical gas delivery systems use L/min ratings, commonly between 0.5-10 L/min (0.13-2.64 GPM).
🔥 Fire Protection
Fire sprinkler systems and fire pumps require substantial flow rates, often 100-1000+ GPM (378-3785+ L/min) depending on system design.
🌱 Irrigation Systems
Agricultural and landscape irrigation systems measure water delivery in GPM or L/min, with drip systems using 1-10 L/min and larger systems exceeding 100 L/min.
Related Flow Rate Conversions
Liters per minute and gallons per minute are just two of many flow rate units used across different industries and regions. Here are other common conversions you might need:
| From | To | Multiply By |
|---|---|---|
| L/min | L/hour | 60 |
| L/min | L/second | 0.01667 |
| L/min | m³/hour | 0.06 |
| L/min | Cubic feet/min (CFM) | 0.03531 |
| GPM | GPH (gallons/hour) | 60 |
| GPM | Cubic feet/min | 0.1337 |
| GPM | Barrels/day | 34.29 |
| L/min | mL/second | 16.667 |
Popular Flow Rate Conversions
Most Searched Conversions:
• 10 L/min = 2.64 GPM (common for household faucets)
• 20 L/min = 5.28 GPM (typical shower flow rate)
• 50 L/min = 13.21 GPM (small pool pump capacity)
• 100 L/min = 26.42 GPM (medium industrial pump)
• 5 GPM = 18.93 L/min (garden hose flow rate)
• 15 GPM = 56.78 L/min (pressure washer output)
• 10 L/min = 2.64 GPM (common for household faucets)
• 20 L/min = 5.28 GPM (typical shower flow rate)
• 50 L/min = 13.21 GPM (small pool pump capacity)
• 100 L/min = 26.42 GPM (medium industrial pump)
• 5 GPM = 18.93 L/min (garden hose flow rate)
• 15 GPM = 56.78 L/min (pressure washer output)
Frequently Asked Questions
What is the difference between L/min and GPM?
L/min (liters per minute) is a metric unit of flow rate, while GPM (gallons per minute) is an imperial unit used primarily in the United States. Both measure the volume of liquid flowing past a point per minute. 1 L/min equals approximately 0.264 GPM.
How do I convert L/min to GPM?
Multiply the L/min value by 0.264172 to get GPM. For example, 20 L/min × 0.264172 = 5.28 GPM. This conversion factor is derived from the relationship between liters and US gallons.
Is LPM the same as L/min?
Yes, LPM and L/min both refer to liters per minute. They are simply different abbreviations for the same flow rate unit. Both are widely used in technical specifications and documentation.
What is a typical flow rate for a kitchen faucet?
A standard kitchen faucet typically has a flow rate between 6-8 L/min (1.6-2.1 GPM). Water-efficient models may have flow rates as low as 3-5 L/min (0.8-1.3 GPM), while older fixtures might exceed 10 L/min (2.6 GPM).
Why do we need to convert between L/min and GPM?
Conversion is necessary when working with equipment specifications from different countries. Metric countries use L/min while the US uses GPM. Engineers, plumbers, and technicians often need to convert between these units when designing systems, ordering equipment, or comparing product specifications.
What flow rate do I need for my pump?
The required flow rate depends on your application. Pool filters typically need 15-60 GPM (57-227 L/min), irrigation systems vary from 5-50 GPM (19-189 L/min), and household water pumps usually require 6-15 GPM (23-57 L/min). Always consult the manufacturer’s specifications for your specific equipment.
Can I use this conversion for gases?
While the mathematical conversion remains the same, flow rates for gases are typically measured in different units like CFM (cubic feet per minute) or SCFM (standard cubic feet per minute) due to gas compressibility. For liquid flow rates, L/min and GPM are appropriate units.
What is the flow rate of a standard garden hose?
A typical garden hose provides 9-17 L/min (2.4-4.5 GPM) depending on water pressure and hose diameter. A 5/8-inch hose at 40 PSI delivers approximately 15 L/min (4 GPM), while a 3/4-inch hose can provide up to 23 L/min (6 GPM).