- 1). Enter the value of the fluid flow rate, in units of m3/h, into the calculator. For example, if you had a hose which was expelling water at a rate of 50 m3/h, you would enter 50.
- 2). Multiply the value you just entered by 4.403. This is the conversion factor between m3/h and gpm.
- 3). Report the result of your calculation as the fluid flow rate in units of gpm. In the case of the example, you would calculate 50 times 4.403 and obtain a result of 220 gpm.
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