Convert between litres per minute, cubic metres per hour, US gallons per minute and other flow rate units.
Flow rate is volume per unit time — how much fluid passes a point in a pipe, a duct or a channel. Plumbers and hydraulic engineers work in litres per minute (L/min) or cubic metres per hour (m³/h). HVAC technicians use cubic feet per minute (CFM). Oil and gas reports use barrels per day (bbl/d). This converter handles all of them.
The conversions are pure arithmetic based on the definitions of the volume and time units. There is no temperature, pressure or fluid-density dependency here — this is volumetric flow, not mass flow.
The conversion runs entirely in JavaScript with no server calls, so your data stays on your device.
value_in_target = value_in_source × (source_factor / target_factor), where factors are in L/min.
US gallons per minute. One US gallon is 3.785 litres, so 1 GPM ≈ 3.785 L/min.
Cubic feet per minute, used in HVAC and pneumatics. 1 CFM ≈ 28.32 L/min.
No. Everything runs locally in JavaScript on your device — nothing is transmitted or stored.
Volumetric. For mass flow you would need the fluid density.
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