This converter turns US gallons per minute into liters per second instantly, using the exact factor 1 US gallon per minute = 0.0630901964 liters per second. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
The US standard for pumps, irrigation and fixtures. Used for plumbing design and compressed air.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
US gallons per minute- The amount you are converting, measured in US gallons per minute
0.0630901964- The exact number of liters per second in one US gallon per minute
liters per second- The converted result
How it works, step by step
- Enter the number of US gallons per minute you want to convert.
- The value is multiplied by 0.0630901964, the exact conversion factor.
- The result is displayed in liters per second, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 US gallons per minute
Multiply 5 by 0.063090196. That gives 0.315451 liters per second. A quick sanity check: one US gallon per minute is smaller than one liter per second, so the number should get smaller — and it does.
Converting 72 US gallons per minute
72 × 0.063090196 = 4.5425 liters per second. Working backwards, 4.5425 ÷ 0.063090196 returns 72 US gallons per minute, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many liters per second are in one US gallon per minute?
Exactly 0.0630901964. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert US gallons per minute to liters per second?
Liters Per Second = US gallons per minute × 0.0630901964. To reverse it, divide instead: US gallons per minute = liters per second ÷ 0.0630901964, which is the same as multiplying by 15.85032314.
Is the US gallon per minute bigger than the liter per second?
No. One US gallon per minute is only 0.0630902 of a liter per second, so the liter per second is the larger unit.
Why does my answer differ slightly from other gallons-per-minute to liters-per-second converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a US gallon per minute?
The US standard for pumps, irrigation and fixtures.
What is a liter per second?
Used for plumbing design and compressed air.
Us Gallons Per Minute to liters per second reference table
| Us Gallons Per Minute | Liters Per Second |
|---|---|
| 0.5 GPM | 0.031545 L/s |
| 1 GPM | 0.06309 L/s |
| 2 GPM | 0.12618 L/s |
| 3 GPM | 0.189271 L/s |
| 5 GPM | 0.315451 L/s |
| 10 GPM | 0.630902 L/s |
| 15 GPM | 0.946353 L/s |
| 20 GPM | 1.2618 L/s |
| 25 GPM | 1.5773 L/s |
| 50 GPM | 3.1545 L/s |
| 75 GPM | 4.7318 L/s |
| 100 GPM | 6.309 L/s |
| 250 GPM | 15.7725 L/s |
| 500 GPM | 31.5451 L/s |
| 1000 GPM | 63.0902 L/s |
Exact factor: 1 US gallon per minute = 0.0630901964 liters per second. Values rounded for display.