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Flow rate converters

11 converters. Liters per minute, gallons per minute, cubic meters per hour and CFM, each with the formula and the math worked out with your numbers.

Water & plumbing

Gallons per minute to liters per minute gpm → L/min 10 gpm = 37.85 L/min Liters per minute to gallons per minute L/min → gpm 20 L/min = 5.28 gpm Liters per second to gallons per minute L/s → gpm 5 L/s = 79.25 gpm Gallons per minute to liters per second gpm → L/s 100 gpm = 6.31 L/s Gallons per hour to liters per hour gph → L/h 100 gph = 378.54 L/h Liters per hour to gallons per hour L/h → gph 500 L/h = 132.09 gph Cubic meters per hour to liters per minute m³/h → L/min 5 m³/h = 83.33 L/min Liters per minute to cubic meters per hour L/min → m³/h 100 L/min = 6 m³/h

Air

Cubic feet per minute to cubic meters per hour cfm → m³/h 400 cfm = 679.6 m³/h Cubic meters per hour to cubic feet per minute m³/h → cfm 500 m³/h = 294.29 cfm Cubic feet per minute to liters per second cfm → L/s 100 cfm = 47.19 L/s

Flow rate units at a glance

Unit	Symbol	In liters per second	Defined as
Liter per second	L/s	1	3.6 m³/h
Liter per minute	L/min	0.016667	1/60 L/s
Liter per hour	L/h	0.000278	1/60 L/min
Cubic meter per hour	m³/h	0.277778	1,000 L/h
Gallon per minute	gpm	0.06309	3.785411784 L/min
Gallon per hour	gph	0.001052	1/60 gpm
Cubic foot per minute	cfm	0.471947	1 ft³/min

Gallons here are US gallons (3.785411784 L).