Unit Conversion

CMH to CFM Calculator

Convert between cubic meters per hour and cubic feet per minute.

Conversion Direction
Enter the airflow value to convert
Cubic Feet per Minute
0 CFM
100 CMH × 0.5886 = 58.86 CFM

About This Calculator

This calculator converts between cubic meters per hour (CMH or m³/h) and cubic feet per minute (CFM), two common units for measuring airflow in HVAC systems. CMH is standard in metric countries, while CFM is used in the United States.

CFM = CMH × 0.588578 CMH = CFM × 1.699
Where:
CFM = Cubic feet per minute
CMH = Cubic meters per hour (m³/h)
0.588578 = Conversion factor (CMH to CFM)
1.699 = Conversion factor (CFM to CMH)

Quick Reference Table

CMH (m³/h) CFM
5029.43
10058.86
250147.14
500294.29
1,000588.58
2,5001,471.45
5,0002,942.89
10,0005,885.78