A quick two-way CFM ⇄ m³/h converter: type in either box, choose how many decimals you want and copy the answer with one click.
CFM
m³/h
Step-by-step calculation
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How to use the CFM to m³/h Converter
Type a value in the Cubic feet per minute box. The cubic meters per hour result appears instantly.
Going the other way? Type in the Cubic meters per hour box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.
Cubic feet per minute to cubic meters per hour formula
m³/h = CFM × 1.699010796
Take the value in cubic feet per minute.
Multiply it by 1.699010796 (the number of cubic meters per hour in one cubic foot per minute).
Example: 100 CFM × 1.699010796 = 169.901 m³/h.
Reverse formula (cubic meters per hour to cubic feet per minute): CFM = m³/h ÷ 1.699010796. Example: 509.703 m³/h ÷ 1.699010796 = 300 CFM.
Quick mental estimate: multiply by about 1.7. For exact answers use the converter above.
CFM to m³/h conversion table (1–100)
Click any row to load it into the converter.
Cubic feet per minute to cubic meters per hour
Cubic feet per minute
Cubic meters per hour
1 CFM
1.7 m³/h
2 CFM
3.4 m³/h
3 CFM
5.1 m³/h
4 CFM
6.8 m³/h
5 CFM
8.5 m³/h
6 CFM
10.19 m³/h
7 CFM
11.89 m³/h
8 CFM
13.59 m³/h
9 CFM
15.29 m³/h
10 CFM
16.99 m³/h
11 CFM
18.69 m³/h
12 CFM
20.39 m³/h
13 CFM
22.09 m³/h
14 CFM
23.79 m³/h
15 CFM
25.49 m³/h
16 CFM
27.18 m³/h
17 CFM
28.88 m³/h
18 CFM
30.58 m³/h
19 CFM
32.28 m³/h
20 CFM
33.98 m³/h
21 CFM
35.68 m³/h
22 CFM
37.38 m³/h
23 CFM
39.08 m³/h
24 CFM
40.78 m³/h
25 CFM
42.48 m³/h
26 CFM
44.17 m³/h
27 CFM
45.87 m³/h
28 CFM
47.57 m³/h
29 CFM
49.27 m³/h
30 CFM
50.97 m³/h
31 CFM
52.67 m³/h
32 CFM
54.37 m³/h
33 CFM
56.07 m³/h
34 CFM
57.77 m³/h
35 CFM
59.47 m³/h
36 CFM
61.16 m³/h
37 CFM
62.86 m³/h
38 CFM
64.56 m³/h
39 CFM
66.26 m³/h
40 CFM
67.96 m³/h
41 CFM
69.66 m³/h
42 CFM
71.36 m³/h
43 CFM
73.06 m³/h
44 CFM
74.76 m³/h
45 CFM
76.46 m³/h
46 CFM
78.15 m³/h
47 CFM
79.85 m³/h
48 CFM
81.55 m³/h
49 CFM
83.25 m³/h
50 CFM
84.95 m³/h
51 CFM
86.65 m³/h
52 CFM
88.35 m³/h
53 CFM
90.05 m³/h
54 CFM
91.75 m³/h
55 CFM
93.45 m³/h
56 CFM
95.14 m³/h
57 CFM
96.84 m³/h
58 CFM
98.54 m³/h
59 CFM
100.24 m³/h
60 CFM
101.94 m³/h
61 CFM
103.64 m³/h
62 CFM
105.34 m³/h
63 CFM
107.04 m³/h
64 CFM
108.74 m³/h
65 CFM
110.44 m³/h
66 CFM
112.13 m³/h
67 CFM
113.83 m³/h
68 CFM
115.53 m³/h
69 CFM
117.23 m³/h
70 CFM
118.93 m³/h
71 CFM
120.63 m³/h
72 CFM
122.33 m³/h
73 CFM
124.03 m³/h
74 CFM
125.73 m³/h
75 CFM
127.43 m³/h
76 CFM
129.12 m³/h
77 CFM
130.82 m³/h
78 CFM
132.52 m³/h
79 CFM
134.22 m³/h
80 CFM
135.92 m³/h
81 CFM
137.62 m³/h
82 CFM
139.32 m³/h
83 CFM
141.02 m³/h
84 CFM
142.72 m³/h
85 CFM
144.42 m³/h
86 CFM
146.11 m³/h
87 CFM
147.81 m³/h
88 CFM
149.51 m³/h
89 CFM
151.21 m³/h
90 CFM
152.91 m³/h
91 CFM
154.61 m³/h
92 CFM
156.31 m³/h
93 CFM
158.01 m³/h
94 CFM
159.71 m³/h
95 CFM
161.41 m³/h
96 CFM
163.11 m³/h
97 CFM
164.8 m³/h
98 CFM
166.5 m³/h
99 CFM
168.2 m³/h
100 CFM
169.9 m³/h
Cubic meters per hour to cubic feet per minute
Cubic meters per hour
Cubic feet per minute
1 m³/h
0.59 CFM
2 m³/h
1.18 CFM
3 m³/h
1.77 CFM
4 m³/h
2.35 CFM
5 m³/h
2.94 CFM
6 m³/h
3.53 CFM
7 m³/h
4.12 CFM
8 m³/h
4.71 CFM
9 m³/h
5.3 CFM
10 m³/h
5.89 CFM
11 m³/h
6.47 CFM
12 m³/h
7.06 CFM
13 m³/h
7.65 CFM
14 m³/h
8.24 CFM
15 m³/h
8.83 CFM
16 m³/h
9.42 CFM
17 m³/h
10.01 CFM
18 m³/h
10.59 CFM
19 m³/h
11.18 CFM
20 m³/h
11.77 CFM
21 m³/h
12.36 CFM
22 m³/h
12.95 CFM
23 m³/h
13.54 CFM
24 m³/h
14.13 CFM
25 m³/h
14.71 CFM
26 m³/h
15.3 CFM
27 m³/h
15.89 CFM
28 m³/h
16.48 CFM
29 m³/h
17.07 CFM
30 m³/h
17.66 CFM
31 m³/h
18.25 CFM
32 m³/h
18.83 CFM
33 m³/h
19.42 CFM
34 m³/h
20.01 CFM
35 m³/h
20.6 CFM
36 m³/h
21.19 CFM
37 m³/h
21.78 CFM
38 m³/h
22.37 CFM
39 m³/h
22.95 CFM
40 m³/h
23.54 CFM
41 m³/h
24.13 CFM
42 m³/h
24.72 CFM
43 m³/h
25.31 CFM
44 m³/h
25.9 CFM
45 m³/h
26.49 CFM
46 m³/h
27.07 CFM
47 m³/h
27.66 CFM
48 m³/h
28.25 CFM
49 m³/h
28.84 CFM
50 m³/h
29.43 CFM
51 m³/h
30.02 CFM
52 m³/h
30.61 CFM
53 m³/h
31.19 CFM
54 m³/h
31.78 CFM
55 m³/h
32.37 CFM
56 m³/h
32.96 CFM
57 m³/h
33.55 CFM
58 m³/h
34.14 CFM
59 m³/h
34.73 CFM
60 m³/h
35.31 CFM
61 m³/h
35.9 CFM
62 m³/h
36.49 CFM
63 m³/h
37.08 CFM
64 m³/h
37.67 CFM
65 m³/h
38.26 CFM
66 m³/h
38.85 CFM
67 m³/h
39.43 CFM
68 m³/h
40.02 CFM
69 m³/h
40.61 CFM
70 m³/h
41.2 CFM
71 m³/h
41.79 CFM
72 m³/h
42.38 CFM
73 m³/h
42.97 CFM
74 m³/h
43.55 CFM
75 m³/h
44.14 CFM
76 m³/h
44.73 CFM
77 m³/h
45.32 CFM
78 m³/h
45.91 CFM
79 m³/h
46.5 CFM
80 m³/h
47.09 CFM
81 m³/h
47.67 CFM
82 m³/h
48.26 CFM
83 m³/h
48.85 CFM
84 m³/h
49.44 CFM
85 m³/h
50.03 CFM
86 m³/h
50.62 CFM
87 m³/h
51.21 CFM
88 m³/h
51.79 CFM
89 m³/h
52.38 CFM
90 m³/h
52.97 CFM
91 m³/h
53.56 CFM
92 m³/h
54.15 CFM
93 m³/h
54.74 CFM
94 m³/h
55.33 CFM
95 m³/h
55.91 CFM
96 m³/h
56.5 CFM
97 m³/h
57.09 CFM
98 m³/h
57.68 CFM
99 m³/h
58.27 CFM
100 m³/h
58.86 CFM
Common values
Cubic feet per minute
Cubic meters per hour
Example
50 CFM
84.95 m³/h
Bathroom fan
80 CFM
135.92 m³/h
80 CFM
100 CFM
169.9 m³/h
100 CFM
150 CFM
254.85 m³/h
150 CFM
300 CFM
509.7 m³/h
Range hood
400 CFM
679.6 m³/h
400 CFM
600 CFM
1,019.41 m³/h
Powerful range hood
1,000 CFM
1,699.01 m³/h
1,000 CFM
About cubic feet per minute and cubic meters per hour
Cubic feet per minute (CFM). Cubic feet per minute (CFM) measures air flow for fans, range hoods, air compressors and HVAC ducts. 1 CFM is about 1.699 m³/h.
Cubic meters per hour (m³/h). Cubic meters per hour (m³/h) is the metric air- and water-flow unit used for ventilation, pumps and HVAC.
Frequently asked questions
1 cubic foot per minute equals how many cubic meters per hour?
One cubic foot per minute equals 1.69901 cubic meters per hour.
How do you convert cubic feet per minute to cubic meters per hour?
Multiply the number of cubic feet per minute by 1.699010796. For example, 100 CFM × 1.699010796 = 169.901 m³/h.
What is 300 cubic feet per minute in cubic meters per hour?
300 CFM is 509.703 m³/h (range hood).
How do I convert cubic meters per hour back to cubic feet per minute?
Divide by 1.699010796, or press the ⇄ swap button above. For example, 509.703 m³/h ÷ 1.699010796 = 300 CFM.
Which gallon is used for GPM?
1 CFM equals 1.699 m³/h. To size a bathroom fan, a common rule is 1 CFM per square foot of floor area (or about 8 air changes per hour).
Is this converter free and private?
Yes. It is free with no sign-up, and every calculation runs in your browser, so nothing you type is sent to a server.