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Converters

Volumetric Flow Rate Converter

Convert volumetric flow rate accurately between liters per second, liters per minute, cubic meters per second, cubic meters per hour, U.S. gallons per minute and cubic feet per minute.

Example: a flow rate of 10 U.S. gal/min. How many L/min is that?
Result 37.854118 L/min 10 US gal/min = 37.854118 L/min
One-unit equivalent 1 US gal/min = 3.785412 L/min A quick way to understand the relationship between the two units.

✓ Conversion factors match data and definitions from the National Institute of Standards and Technology (NIST)

How is the conversion calculated? The value is converted to liters per second first, then to the requested flow-rate unit using exact volume and time relationships.

This calculation runs in your browser. Your values are not sent to our server.

How it works

  1. Enter a flow-rate value, then choose the current and target units.
  2. Example: 10 U.S. gal/min equals exactly 37.85411784 L/min, with the displayed result shortened according to the display precision.
  3. The tool uses liters per second as its internal reference and applies exact volume and time relationships.
  4. The gallon used for GPM is explicitly the U.S. liquid gallon; it is not mixed with the imperial gallon.
  5. Negative values are preserved if your system uses a sign to represent reverse flow direction.

FAQ

How many L/min are in 1 U.S. GPM?

1 U.S. gallon per minute equals exactly 3.785411784 L/min.

How many L/s are in 1 CFM?

1 ft³/min equals exactly 0.4719474432 L/s from the exact international-foot definition.

How many L/min are in 1 m³/h?

1 m³/h equals 16.666666… L/min, so the display is rounded when needed.

Is GPM U.S. or imperial here?

GPM in this converter means U.S. liquid gallons per minute, and the unit name says so explicitly to avoid ambiguity.

Does this tool calculate medical fluid or IV rates?

No. This is a general engineering unit converter for volumetric flow rate, not a dosage or IV-fluid calculator.

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