Flow Rate Converter
Liters/minute (L/min)
Definition: Liters per minute (symbol: L/min or LPM) is a metric unit of volumetric flow rate that measures the volume of a fluid (one liter) passing a specific point in one minute.
History/origin: This unit is a direct combination of the metric unit for volume (the liter) and the universal unit of time (the minute). It was adopted for practical everyday flow measurements.
Current use: LPM is widely used to measure water flow in household plumbing (faucets, showers), medical oxygen delivery systems, and laboratory liquid pumps.
Gallons/minute (US GPM)
Definition: Gallons per minute (symbol: GPM) is a US customary and imperial unit of volumetric flow rate, denoting the flow of one US fluid gallon per minute.
History/origin: The US liquid gallon was originally defined as the volume of a cylinder 7 inches in diameter and 6 inches high. GPM became the standard flow measurement during the American industrial revolution.
Current use: GPM is extensively used in the United States for specifying the capacity of water pumps, swimming pool filtration systems, fire hydrants, and irrigation networks.
Liters/minute (L/min) to Gallons/minute (US GPM) Conversion Table
| Liters/minute (L/min) [lpm] | Gallons/minute (US GPM) [gpm] |
|---|---|
| 0.01 lpm | 0.00264172 gpm |
| 0.1 lpm | 0.02641721 gpm |
| 1 lpm | 0.26417205 gpm |
| 2 lpm | 0.52834411 gpm |
| 3 lpm | 0.79251616 gpm |
| 5 lpm | 1.32086026 gpm |
| 10 lpm | 2.64172053 gpm |
| 20 lpm | 5.28344105 gpm |
| 50 lpm | 13.20860263 gpm |
| 100 lpm | 26.41720526 gpm |
| 1000 lpm | 264.17205264 gpm |
How to Convert Liters/minute (L/min) to Gallons/minute (US GPM)
1 lpm = 0.26417205 gpm
1 gpm = 3.78541178 lpm
Example: convert 15 lpm to gpm:
15 lpm = 15 × 0.26417205 gpm = 3.96258079 gpm
Did You Know?
- A standard modern showerhead uses about 9.5 Liters per minute (L/min) to save water, whereas older ones used up to 20 L/min!
- Firefighters rely heavily on GPM (Gallons per minute). A standard fire truck pump can deliver water at massive rates between 1,000 to 1,500 GPM to extinguish fires quickly.