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CFM (ft³/min) = air velocity (ft/min) x area (ft²)
CMM (m³/min) = air velocity (m/s) x area (m²) x 60
CFM: cubic feet per minute
CMM: cubic meters per minute
m/s
ft/min
km/h
mph
Knot
1 m/s
1
196.87
3.60
2.24
1.944
1 ft/min
0.00508
1
0.01829
0.01138
0.00987
1 km/h
0.2778
54.69
1
0.6222
0.54
1 mph
0.4464
87.89
1.6071
1
0.8679
1 knot
0.5144
101.27
1.8519
1.1523
1
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