l-s to gpm | Exact Decimal + Formula

1 Liter / Second = 15.850322 US Gallon / Minute

One liter / second equals about 15.9 US gallons / minute (exactly 15.85032224 gpm). Real-world use: rivers, water treatment, and industrial pumping systems. This page expresses those values in US gallons / minute, which is used for well pumps, pool pumps, and irrigation systems in the united states. Enter any value above — the result updates instantly, and a 1–1000 reference table follows below.

About Liter / Second and US Gallon / Minute

Liter / Second (L/s)

Liters per second measures larger volumetric flows.

Where it's used: Rivers, water treatment, and industrial pumping systems.

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/s × 15.850322237

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

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

Liter / Second	US Gallon / Minute (Decimal)	Fraction	Real-world equivalent
0.001 L/s	0.01585 gpm	-	fractional unit measurement
0.01 L/s	0.158503 gpm	-	fractional unit measurement
0.1 L/s	1.585032 gpm	-	standard single unit scale
0.5 L/s	7.925161 gpm	-	standard single unit scale
1 L/s	15.850322 gpm	-	multiple unit increments
2 L/s	31.700644 gpm	-	multiple unit increments
5 L/s	79.251611 gpm	-	multiple unit increments
10 L/s	158.503222 gpm	-	multiple unit increments
25 L/s	396.258056 gpm	-	multiple unit increments
50 L/s	792.516112 gpm	-	multiple unit increments
100 L/s	1585.032224 gpm	-	multiple unit increments
250 L/s	3962.580559 gpm	-	multiple unit increments
500 L/s	7925.161119 gpm	-	multiple unit increments
1000 L/s	15850.322237 gpm	-	multiple unit increments

L/s to gpm Formula and Examples

Direct Formula gpm = L/s × 15.850322237

Inverse Formula L/s = gpm × 0.06309

Mental Math Shortcut

Multiply the value by roughly 15.9 to calculate the equivalent amount in your head.

Common Liter / Second to US Gallon / Minute Calculations

5 L/s = 79.251611 gpm
10 L/s = 158.503222 gpm
50 L/s = 792.516112 gpm
100 L/s = 1585.032224 gpm
500 L/s = 7925.161119 gpm

Precision & Practical Use

For example, 10 L/s = 158.503222 gpm — roughly multiple unit increments.

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 / Second to US Gallon / Minute

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

One Liter / Second (L/s) equals 15.850322 US Gallon / Minute (gpm). To convert liter / seconds to us gallon / minutes, multiply the liter / second value by 15.850322.

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

Multiply your liter / second value by 15.850322 to get the result in US Gallon / Minute: gpm = L/s × 15.850322. For example, 5 L/s = 79.251611 gpm.

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

The conversion formula is gpm = L/s × 15.850322. 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/s to gpm?