This converter turns cubic meters per second into US gallons per minute instantly, using the exact factor 1 cubic meter per second = 15850.32314 US gallons per minute. 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 SI unit of volumetric flow, used for rivers and large ducts. The US standard for pumps, irrigation and fixtures.
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
cubic meters per second- The amount you are converting, measured in cubic meters per second
15850.32314- The exact number of US gallons per minute in one cubic meter per second
US gallons per minute- The converted result
How it works, step by step
- Enter the number of cubic meters per second you want to convert.
- The value is multiplied by 15850.32314, the exact conversion factor.
- The result is displayed in US gallons per minute, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 cubic meters per second
Multiply 5 by 15850.323. That gives 79,251.62 US gallons per minute. A quick sanity check: one cubic meter per second is larger than one US gallon per minute, so the number should get bigger — and it does.
Converting 72 cubic meters per second
72 × 15850.323 = 1,141,223.27 US gallons per minute. Working backwards, 1,141,223.27 ÷ 15850.323 returns 72 cubic meters per second, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many US gallons per minute are in one cubic meter per second?
Exactly 15850.32314. 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 cubic meters per second to US gallons per minute?
Us Gallons Per Minute = cubic meters per second × 15850.32314. To reverse it, divide instead: cubic meters per second = US gallons per minute ÷ 15850.32314, which is the same as multiplying by 6.30901964e-05.
Is the cubic meter per second bigger than the US gallon per minute?
Yes. One cubic meter per second equals 15850.3 US gallons per minute, so it is the larger unit.
Why does my answer differ slightly from other cubic-meters-per-second to gallons-per-minute 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 cubic meter per second?
The SI unit of volumetric flow, used for rivers and large ducts.
What is a US gallon per minute?
The US standard for pumps, irrigation and fixtures.
Cubic Meters Per Second to US gallons per minute reference table
| Cubic Meters Per Second | Us Gallons Per Minute |
|---|---|
| 0.5 m³/s | 7,925.16 GPM |
| 1 m³/s | 15,850.32 GPM |
| 2 m³/s | 31,700.65 GPM |
| 3 m³/s | 47,550.97 GPM |
| 5 m³/s | 79,251.62 GPM |
| 10 m³/s | 158,503.23 GPM |
| 15 m³/s | 237,754.85 GPM |
| 20 m³/s | 317,006.46 GPM |
| 25 m³/s | 396,258.08 GPM |
| 50 m³/s | 792,516.16 GPM |
| 75 m³/s | 1,188,774.24 GPM |
| 100 m³/s | 1,585,032.31 GPM |
| 250 m³/s | 3,962,580.79 GPM |
| 500 m³/s | 7,925,161.57 GPM |
| 1000 m³/s | 15,850,323.14 GPM |
Exact factor: 1 cubic meter per second = 15850.32314 US gallons per minute. Values rounded for display.