How many liters per minute is 1 CFM?

1 CFM (cubic foot per minute) equals approximately 28.3168 liters per minute. This comes from 1 cubic foot = 28.316846592 liters.

Is CFM the same as L/min?

No. Both measure volumetric flow rate, but use different unit systems. CFM is the imperial unit; L/min is metric. 1 CFM ≈ 28.317 L/min.

How do I convert L/min back to CFM?

Divide the L/min value by 28.316846592. For example, 100 L/min ÷ 28.3168 ≈ 3.531 CFM. Use the Swap button in this tool to do it automatically.

Why is this conversion used in HVAC?

HVAC equipment in the US is rated in CFM, while many international standards and metric-based codes use L/min or m³/h. Conversion is needed when specifying or comparing equipment across regions.

What is the exact conversion factor from CFM to L/min?

The exact factor is 28.316846592. This is derived from 1 foot = 0.3048 m, so 1 ft³ = 0.3048³ m³ = 0.028316846592 m³ = 28.316846592 liters.

CFM to L/min Converter

Name: CFM to L/min Converter
Availability: InStock
Author: Nham Vu

Convert cubic feet per minute (CFM) to liters per minute (L/min) instantly. Enter a value and get the result with the exact conversion factor.

Flow Rate Converter

1 CFM = 28.316846592 L/min

Cubic Feet per Minute (CFM)

CFM

Liters per Minute (L/min)

L/min

Common CFM to L/min Values

CFM	L/min

Summary

Convert cubic feet per minute (CFM) to liters per minute (L/min) instantly. Enter a value and get the result with the exact conversion factor.

How it works

Enter a flow rate value in CFM (cubic feet per minute) in the input field.
The converter multiplies your value by 28.316846592 to get liters per minute.
The result appears instantly in the L/min output field.
Use the Swap button to reverse the conversion — from L/min back to CFM.
Copy the result to clipboard with one click.
Clear both fields with the Reset button to start a new calculation.

Use cases

Size HVAC ducts and air handlers using manufacturer specs in CFM vs metric L/min.
Convert compressed air compressor output between imperial and metric systems.
Match lab equipment airflow specs when working across US and EU standards.
Calculate ventilation requirements for industrial fans rated in CFM or L/min.
Convert exhaust fan ratings for building code compliance across regions.
Spec pneumatic tools and blowers when sourcing internationally.
Compare HEPA filter airflow ratings between US and international products.
Verify pump and fluid delivery rates on mixed-unit engineering documents.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu