One US gallon per hour is exactly 6.30901964e-05 cubic meters per minute, so converting US gallons per hour to cubic meters per minute is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
Compressor and large-fan output in metric markets. Used for fuel burn and small pumps.
Standard versus actual volume. Gas flow in CFM depends on pressure and temperature, which is why compressor ratings say SCFM and specify the reference conditions. Converting the number is exact; comparing two ratings measured at different conditions is not. The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in cubic meters per minute, so you can sanity-check whether your answer is a plausible size.
The formula
US gallons per hour- The amount you are converting, in US gallons per hour
6.30901964034e-05- The exact number of cubic meters per minute in one US gallon per hour
cubic meters per minute- The converted result
How it works, step by step
- Enter the value in US gallons per hour.
- It is multiplied by 6.30901964034e-05, the exact factor between the two units.
- The answer is shown in cubic meters per minute, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A shower head: 152 GPH in cubic meters per minute
At 152 GPH (a shower head), the same quantity in cubic meters per minute is 152 × 6.30902e-05 = 0.00958971 m³/min. One US gallon per hour is 6.30902e-05 cubic meters per minute, so the numbers shrink as expected.
A fire hydrant: 5.71e+04 GPH in cubic meters per minute
At 5.71e+04 GPH (a fire hydrant), the same quantity in cubic meters per minute is 5.71e+04 × 6.30902e-05 = 3.60245 m³/min. One US gallon per hour is 6.30902e-05 cubic meters per minute, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many cubic meters per minute are in one US gallon per hour?
Exactly 6.30901964034e-05. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert US gallons per hour to cubic meters per minute?
cubic meters per minute = US gallons per hour × 6.30901964034e-05. Reversed, US gallons per hour = cubic meters per minute ÷ 6.30901964034e-05, which is the same as multiplying by 15,850.3231406.
Which is the bigger unit, the US gallon per hour or the cubic meter per minute?
The cubic meter per minute. One US gallon per hour is only 6.30902e-05 of a cubic meter per minute, so it takes 15,850.3 US gallons per hour to make one cubic meter per minute.
What does this quantity actually measure?
Both units measure volumetric flow. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a US gallon per hour?
Used for fuel burn and small pumps.
What is a cubic meter per minute?
Compressor and large-fan output in metric markets.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do GPH to m³/min in my head?
Plenty of people do this in their head: divide by 16,000 instead of using the exact factor 0.000063. At 100 that shortcut gives 0.00625 cubic meters per minute, off by 0.000059 cubic meters per minute or about 0.94%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Us Gallons Per Hour to cubic meters per minute reference tables
| Us Gallons Per Hour | Cubic Meters Per Minute |
|---|---|
| 0.5 GPH | 3.15451e-05 m³/min |
| 1 GPH | 6.30902e-05 m³/min |
| 2 GPH | 0.00012618 m³/min |
| 3 GPH | 0.000189271 m³/min |
| 5 GPH | 0.000315451 m³/min |
| 10 GPH | 0.000630902 m³/min |
| 20 GPH | 0.0012618 m³/min |
| 25 GPH | 0.00157725 m³/min |
| 50 GPH | 0.00315451 m³/min |
| 75 GPH | 0.00473176 m³/min |
| 100 GPH | 0.00630902 m³/min |
| 250 GPH | 0.0157725 m³/min |
| 500 GPH | 0.0315451 m³/min |
| 1000 GPH | 0.0630902 m³/min |
| 5000 GPH | 0.315451 m³/min |
Exact factor: 1 US gallon per hour = 6.30901964034e-05 cubic meters per minute.
| Quantity | GPH | m³/min |
|---|---|---|
| A dripping tap | 0.0951 GPH | 6e-06 m³/min |
| A bathroom tap | 95.1 GPH | 0.006 m³/min |
| A shower head | 152.2 GPH | 0.0096 m³/min |
| A garden hose | 285.3 GPH | 0.018 m³/min |
| A fire hydrant | 5.706e+04 GPH | 3.6 m³/min |
| The Thames at London | 6.182e+07 GPH | 3900 m³/min |
Published reference values, converted with the same factor this page uses.