Flow Converter

Use this tool to convert between different units of flow rate, such as liters per second, gallons per minute, and more.

1

Common Flow Conversions

L/min to GPM L/min → gal/min
m³/h to L/s m³/h → L/s
GPM to L/min gal/min → L/min
L/s to m³/h L/s → m³/h

What is Flow Conversion?

Flow conversion is the process of converting measurements of fluid flow rate from one unit to another. Our flow converter tool makes it easy to switch between different measurement systems used in industrial, engineering, and scientific applications. Flow rate is typically measured as volume per unit time or mass per unit time.

Common units include liters per minute (L/min), gallons per minute (GPM), cubic meters per hour (m³/h), and cubic feet per minute (CFM). These conversions are essential for hydraulic systems, plumbing, chemical processing, water treatment, and HVAC applications where precise flow measurements are critical.

Simply enter your value in the "From" field, select the original unit, choose your target unit in the "To" field, and the converter will instantly display the converted result along with the conversion formula.

Flow Conversion Examples

Industrial Pump Example

A manufacturing plant needs to convert pump flow rates:

  • 100 L/min = 26.42 GPM
  • 50 GPM = 189.27 L/min
  • 200 m³/h = 55.56 L/s

HVAC System Example

Converting air handling unit flow rates:

  • 500 CFM = 14.16 m³/min
  • 1000 L/min = 35.31 CFM
  • 60 m³/h = 0.017 m³/s

Water Treatment Example

Calculating filtration system flow rates:

  • 250 GPM = 946.35 L/min
  • 75 L/s = 11.93 m³/h
  • 1000 m³/h = 277.78 L/s

Frequently Asked Questions

How many liters per minute in a GPM?

One US gallon per minute (GPM) equals approximately 3.785 liters per minute. This conversion is commonly used in plumbing, industrial applications, and water treatment systems.

What is the difference between CFM and m³/h?

CFM (cubic feet per minute) and m³/h (cubic meters per hour) both measure airflow but in different units. One CFM equals approximately 1.699 m³/h. CFM is primarily used in the US, while m³/h is the metric standard.

How do I convert m³/h to L/s?

To convert cubic meters per hour to liters per second, multiply by approximately 0.2778. For example, 100 m³/h × 0.2778 = 27.78 L/s.

What is the formula for converting GPM to L/min?

To convert US gallons per minute to liters per minute, multiply by 3.78541. For example, 10 GPM × 3.78541 = 75.85 L/min.

How many CFM in a m³/min?

One cubic meter per minute (m³/min) equals approximately 35.315 cubic feet per minute (CFM). This conversion is used in industrial ventilation and air conditioning calculations.