Flow Rate Converter

Multiply GPM by 3.78541. A typical garden hose flows at 5-10 GPM, which is about 18.9-37.9 liters per minute. Fire hoses run much higher at 150-250 GPM (568-946 L/min).

CFM stands for cubic feet per minute, commonly used in HVAC and ventilation. Multiply CFM by 1.699 to get cubic meters per hour. A standard bathroom exhaust fan moves about 50-110 CFM (85-187 m³/h).

A standard kitchen faucet flows at about 2.2 GPM (8.3 L/min) in the US. Low-flow faucets mandated by WaterSense use 1.5 GPM (5.7 L/min) or less, saving roughly 700 gallons per year per household.

Multiply liters per second by 3.6 to get cubic meters per hour. For example, 10 L/s equals 36 m³/h. This conversion is common in industrial pump specifications and water treatment plant design.

The US primarily uses GPM (gallons per minute) for liquids and CFM (cubic feet per minute) for gases. Metric countries use L/min or m³/h for liquids and m³/s or m³/h for gases. Industrial standards like ISO typically specify m³/h or L/s.