Exact conversion factor
One cfm is one cubic foot of volume passing per minute. NIST defines the international foot as exactly 0.3048 metres. Cubing that length gives 1 ft³ = 0.028316846592 m³. Multiplying by 60 minutes per hour gives 1 cfm = 1.69901079552 m³/h.
cfm = m³/h ÷ 1.69901079552
For the reverse direction, use m³/h = cfm × 1.69901079552. The factor is exact for the international foot; round only the displayed result.
m³/h to cfm conversion table
These values are rounded to four decimal places. Use the formula above when your calculation needs more precision.
| m³/h | cfm (ft³/min) |
|---|---|
| 1 | 0.5886 |
| 10 | 5.8858 |
| 25 | 14.7144 |
| 50 | 29.4289 |
| 100 | 58.8578 |
| 250 | 147.1444 |
| 500 | 294.2889 |
| 1,000 | 588.5778 |
Worked example: 100 m³/h
Divide 100 by 1.69901079552 to get 58.8578… cfm. For a quick check, open the Flow Rate Converter, choose m³/h and ft³/min, and enter 100.
What this conversion covers
This is a conversion of volumetric flow. It does not convert flow velocity, pressure, or mass flow. SCFM and Nm³/h refer to standard or normal conditions, which must be specified before comparing them with an actual flow rate.