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Flow Converter (Volumetric)

Convert volumetric flow rate units including m³/s, L/min, GPM, CFM, m³/h for fluid and gas flow calculations.

What this tool does

Convert volumetric flow rate units including m³/s, L/min, GPM, CFM, m³/h for fluid and gas flow calculations. Type an amount in liters per minute, choose the units, and the tool converts it to US gallons per minute (GPM). It offers 13 volume flow rate units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one from 13 options, including Cubic meter per second, Cubic meter per minute, Cubic meter per hour, Liter per second, Liter per minute, Liter per hour. Starts as Liter per minute.
  • To: Choose one of the same 13 units as "From". Starts as US gallon per minute (GPM).

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from liters per minute to US gallons per minute (GPM):

  • 1 L/min ≈ 0.264172 gal (US)/min
  • 5 L/min ≈ 1.32086 gal (US)/min
  • 10 L/min ≈ 2.641721 gal (US)/min
  • 50 L/min ≈ 13.208603 gal (US)/min
  • 100 L/min ≈ 26.417205 gal (US)/min

Multiply the number of liters per minute by about 0.264172 to get US gallons per minute (GPM). The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.

Sources: Liter per minute: exact by definition. US gallon per minute (GPM): exact by definition.

Limitations

  • Converts volumetric flow rate only. It does not convert between mass flow and volume flow, which needs a density.
  • Gallons are US gallons.

FAQs

Q: How do I convert liters per minute to US gallons per minute?
A: Enter the value, choose liters per minute as the From unit and US gallons per minute as the To unit. The result and the other units in the list update immediately. To go the other way, swap the two units.
Q: Which gallon does this use?
A: The gallon units are US gallons. Imperial (UK) gallons are a different size and are not in this list.
Q: What is CFM?
A: CFM is cubic feet per minute, a common unit for air flow in ventilation and fans. It is the cubic foot per minute entry in the list.

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