Cubic Meter per Second to Cubic Foot per Minute (m³/s to CFM)
Convert m³/s to CFM — Flow Rate converter
Also written as m3/s to CFM.
One cubic meter per second equals 2118.88 CFM, so to convert cubic meters per second to cubic feet per minute you multiply the value by 2118.88. A cubic meter per second is larger than a cubic foot per minute — going the other way, 1 CFM = 0.0004719474 m³/s. For example, 10 m³/s = 21188.8 CFM and 50 m³/s = 105944 CFM.
1 m³/s = 2118.88 CFM
Cubic Meter per Second to Cubic Foot per Minute formula
1 Cubic Meter per Second = 2118.88 CFM
Worked examples
- 25 m³/s = 52972 CFM
- 100 m³/s = 211888 CFM
Cubic Meter per Second to Cubic Foot per Minute conversion table
| Cubic Meter per Second (m³/s) | Cubic Foot per Minute (CFM) |
|---|---|
| 1 | 2118.88 |
| 2 | 4237.76 |
| 3 | 6356.64 |
| 5 | 10594.4 |
| 8 | 16951.04 |
| 10 | 21188.8 |
| 12 | 25426.56 |
| 15 | 31783.2 |
| 20 | 42377.6 |
| 25 | 52972 |
| 50 | 105944 |
| 100 | 211888 |
| 250 | 529720 |
| 500 | 1059440 |
| 1000 | 2118880 |
Which gallon, and which trade
The single most expensive mistake in flow conversion is the gallon. A US liquid gallon is 3.785411784 litres; an imperial gallon is 4.54609 litres. US GPM and imperial GPM differ by about 20%, and pump datasheets frequently do not say which one they mean. Check the manufacturer's country of origin before trusting a GPM figure.
Different trades default to different units for the same physical quantity: HVAC and compressed air work in CFM, plumbing and pumps in GPM or LPM, and process and water engineering in m³/h or L/s. A specification that mixes them is usually quoting different equipment, not different flows. On this page, 1 m³/s = 2118.88 CFM.
CFM to metric is worth memorising: one cubic foot is exactly 0.028316846592 m³, so 1 CFM = 1.699011 m³/h and 1,000 CFM ≈ 1,699 m³/h. Note that CFM on a compressor may be quoted as free air delivery (FAD) at inlet conditions rather than at working pressure — the two are not interchangeable.
Frequently asked questions
How many cubic feet per minute are in one cubic meter per second?
One cubic meter per second equals 2118.88 cubic feet per minute (CFM).
How many cubic meters per second are in one cubic foot per minute?
One cubic foot per minute equals 0.0004719474 cubic meters per second (m³/s).
How do you convert cubic meters per second to cubic feet per minute?
1 Cubic Meter per Second = 2118.88 CFM. Use the calculator above for any value.
What is 5 m³/s in CFM?
5 m³/s = 10594.4 CFM.
What is 100 m³/s in CFM?
100 m³/s = 211888 CFM.
What is 10 m³/s in CFM?
10 m³/s = 21188.8 CFM.
What is 20 m³/s in CFM?
20 m³/s = 42377.6 CFM.
What is 50 m³/s in CFM?
50 m³/s = 105944 CFM.
What is 500 m³/s in CFM?
500 m³/s = 1059440 CFM.
Is a cubic meter per second bigger than a cubic foot per minute?
Yes. A cubic meter per second is larger — one cubic meter per second equals 2118.88 cubic feet per minute (CFM).