l-min to gpm | Exact Decimal + Formula

1 Liter / Minute = 0.264172 US Gallon / Minute

Liters per minute to GPM is the standard flow conversion for pumps, irrigation, and plumbing across metric and imperial systems.

About Liter / Minute and US Gallon / Minute

Liter / Minute (L/min)

Liters per minute measures volumetric flow rate in the metric system.

Where it's used: Water pumps, medical IV infusion, and aquarium filtration ratings.

US Gallon / Minute (gpm)

US gallons per minute measures flow in imperial units; one GPM is about 3.785 L/min.

Where it's used: Well pumps, pool pumps, and irrigation systems in the United States.

Flow Rate Converter

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Precision

Formula

gpm = L/min × 0.264172037

To convert Liter / Minute to US Gallon / Minute, use the formula displayed above.

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Liter / Minute to US Gallon / Minute: Quick Reference Table

Liter / Minute	US Gallon / Minute (Decimal)	Fraction	Real-world equivalent
0.001 L/min	0.000264 gpm	-	fractional unit measurement
0.01 L/min	0.002642 gpm	-	fractional unit measurement
0.1 L/min	0.026417 gpm	-	fractional unit measurement
0.5 L/min	0.132086 gpm	-	fractional unit measurement
1 L/min	0.264172 gpm	-	fractional unit measurement
2 L/min	0.528344 gpm	-	fractional unit measurement
5 L/min	1.32086 gpm	-	standard single unit scale
10 L/min	2.64172 gpm	-	standard single unit scale
25 L/min	6.604301 gpm	-	standard single unit scale
50 L/min	13.208602 gpm	-	multiple unit increments
100 L/min	26.417204 gpm	-	multiple unit increments
250 L/min	66.043009 gpm	-	multiple unit increments
500 L/min	132.086019 gpm	-	multiple unit increments
1000 L/min	264.172037 gpm	-	multiple unit increments

L/min to gpm Formula and Examples

Direct Formula gpm = L/min × 0.264172037

Inverse Formula L/min = gpm × 3.785412

Mental Math Shortcut

Divide the value by roughly 3.8 to quickly estimate the converted result.

Common Liter / Minute to US Gallon / Minute Calculations

5 L/min = 1.32086 gpm
10 L/min = 2.64172 gpm
50 L/min = 13.208602 gpm
100 L/min = 26.417204 gpm
500 L/min = 132.086019 gpm

Precision & Practical Use

For example, 10 L/min = 2.64172 gpm — roughly standard single unit scale.

Results are computed to up to 9 decimal places. Round to the precision of your measuring instrument — for most flow rate applications, 2–3 significant figures are plenty.

Related Specialist Flow Rate Calculators & Niche Tools

Flow rate calculations measure fluid velocity, expressing volume per unit time. Typically calculated in Gallons per Minute (GPM) or Liters per Minute (LPM), these measurements are fundamental in plumbing, irrigation, and hydraulic system design.

Sizing a water pump or designing a sprinkler system requires translating fluid flow rates across metric and imperial systems. Flow calculators allow plumbers and civil engineers to determine if piping and valve sizes can handle specific GPM or LPM rates under pressure, optimizing fluid transport systems for peak output.

Flow gpm to lpm Convert liquid flow rates.

How to Convert Liter / Minute to US Gallon / Minute

How many us gallon / minutes are in one liter / minute?

One Liter / Minute (L/min) equals 0.264172 US Gallon / Minute (gpm). To convert liter / minutes to us gallon / minutes, multiply the liter / minute value by 0.264172.

How do I convert Liter / Minute to US Gallon / Minute?

Multiply your liter / minute value by 0.264172 to get the result in US Gallon / Minute: gpm = L/min × 0.264172. For example, 5 L/min = 1.32086 gpm.

What is the formula for converting L/min to gpm?

The conversion formula is gpm = L/min × 0.264172. Use the calculator above for any value, and see the reference table below for common inputs from 0.001 to 1000.

Is there a quick mental estimate for L/min to gpm?