40 cfm to m³/h

40 cfm = 67.96 m³/h

cfmm³/h
34 cfm57.766
36 cfm61.164
38 cfm64.562
4067.96
42 cfm71.358
44 cfm74.756
46 cfm78.154

40 cfm = 67.96 m³/h

Formula

1 L/s = 0.264172 gal/min · 1 m³/h = 0.588578 cfm · 1 cfm = 1.69901 m³/h