Multiply the number of cubic centimeters per minute by 0.000264172 to convert to gallons per minute. For example, if you have 9,500 cm^3 per minute, multiply 9,500 by 0.000264172 to get 2.51 GPM.
Divide the number of cubic centimeters per minute by 3,785.411784 to convert to gallons to minute. In this example, confirm your answer by dividing 9,500 cm^3 per minute by 3,785.411784 to get 2.51 GPM.
Check your answer with an online cubic centimeters per minute-to-gallons per minute. Enter the flow rate in cubic centimeters per minute and click "Convert."