Cubic Feet Per Minute to Cubic Metres Per Hour Converter
Instantly convert airflow from cubic feet per minute (CFM) to cubic metres per hour (m³/h). Accurate for HVAC systems, extractor fans, ventilation design, and industrial airflow specifications.
Calculate Your Airflow Rate
Enter your airflow value in cubic feet per minute (CFM) below to get an instant, accurate conversion to cubic metres per hour (m³/h).
Airflow Converter
Enter your CFM value to see the equivalent in m³/h
Common on fan, extractor, and HVAC unit datasheets
Switch direction to convert m³/h back to CFM
Converted Airflow
Calculated using the standard CFM ⇄ m³/h factor
CFM to m³/h Conversion Chart
Common airflow values converted from cubic feet per minute to cubic metres per hour. Use this to quickly cross-check fan and extractor specifications.
| CFM | m³/h | L/s | Typical Use |
|---|---|---|---|
| 10 CFM | 17.0 | 4.7 | Small bathroom extractor fan |
| 50 CFM | 85.0 | 23.6 | Kitchen extractor hood |
| 100 CFM | 169.9 | 47.2 | Utility room ventilation |
| 500 CFM | 849.5 | 236.0 | Commercial ventilation unit |
| 1,000 CFM | 1,699.0 | 471.9 | Industrial extraction system |
CFM to m³/h FAQ
Everything you need to know about converting airflow between CFM and cubic metres per hour.
To convert cubic feet per minute (CFM) to cubic metres per hour (m³/h), multiply the CFM value by 1.699. This single factor combines converting cubic feet to cubic metres and minutes to hours.
1 CFM (cubic foot per minute) is equal to approximately 1.699 cubic metres per hour (m³/h). This is the standard conversion factor used across HVAC and ventilation industries worldwide.
CFM is the standard airflow unit in the United States, while m³/h is standard across the UK, Europe, and most of the rest of the world. Converting between them lets engineers compare fans, extractors, and ventilation systems specified in either unit.
To convert cubic metres per hour back to CFM, divide the m³/h value by 1.699, or multiply it by 0.5886. For example, 100 m³/h divided by 1.699 equals approximately 58.9 CFM.