L/s to CFM Calculator
Convert litres per second to CFM.
Enter your values
ⓘ Live results
Results
- Airflow
- 63.6 CFM
- In m³/h
- 108
- In m³/min
- 1.8
- In L/min
- 1,800
Working
- 130 L/s x 2.11888 = 63.6 CFM
Quick answer
One litre per second equals 2.11888 CFM.
CFM = L/s x 2.11888
How to use the L/s to CFM Calculator
- 1Enter the airflow in litres per second.
- 2Read the CFM equivalent for US-rated fans.
- 3Compare m³/h if your ducting is metric.
Worked example
Using the values the calculator loads with:
Inputs
- Airflow30 L/s
Results
- Airflow63.6 CFM
- In m³/h108
- In m³/min1.8
- In L/min1,800
- 30 L/s x 2.11888 = 63.6 CFM
Frequently asked questions
Is L/s a volume or mass rate?
It is a volume rate, so it shifts slightly with air density at altitude or high temperature.
How many L/s per person is typical?
Office standards commonly ask for 8–10 L/s per occupant.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.