Cubic Foot per Minute to Cubic Meter per Second (CFM to m³/s)
Convert CFM to m³/s — Flow Rate converter
Also written as CFM to m3/s.
One cubic foot per minute equals 0.0004719474 m³/s, so to convert cubic feet per minute to cubic meters per second you multiply the value by 0.0004719474. A cubic foot per minute is smaller than a cubic meter per second — going the other way, 1 m³/s = 2118.88 CFM. For example, 10 CFM = 0.0047194744 m³/s and 50 CFM = 0.02359737 m³/s.
1 CFM = 0.0004719474 m³/s
Cubic Foot per Minute to Cubic Meter per Second formula
1 Cubic Foot per Minute = 0.0004719474 m³/s
Worked examples
- 25 CFM = 0.01179869 m³/s
- 100 CFM = 0.04719474 m³/s
Cubic Foot per Minute to Cubic Meter per Second conversion table
| Cubic Foot per Minute (CFM) | Cubic Meter per Second (m³/s) |
|---|---|
| 1 | 0.0004719474 |
| 2 | 0.0009438949 |
| 3 | 0.0014158423 |
| 5 | 0.0023597372 |
| 8 | 0.0037755795 |
| 10 | 0.0047194744 |
| 12 | 0.0056633693 |
| 15 | 0.0070792116 |
| 20 | 0.0094389489 |
| 25 | 0.01179869 |
| 50 | 0.02359737 |
| 100 | 0.04719474 |
| 250 | 0.11798686 |
| 500 | 0.23597372 |
| 1000 | 0.47194744 |
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 CFM = 0.0004719474 m³/s.
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 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 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 do you convert cubic feet per minute to cubic meters per second?
1 Cubic Foot per Minute = 0.0004719474 m³/s. Use the calculator above for any value.
What is 5 CFM in m³/s?
5 CFM = 0.0023597372 m³/s.
What is 100 CFM in m³/s?
100 CFM = 0.04719474 m³/s.
What is 10 CFM in m³/s?
10 CFM = 0.0047194744 m³/s.
What is 20 CFM in m³/s?
20 CFM = 0.0094389489 m³/s.
What is 50 CFM in m³/s?
50 CFM = 0.02359737 m³/s.
What is 500 CFM in m³/s?
500 CFM = 0.23597372 m³/s.
Is a cubic foot per minute bigger than a cubic meter per second?
No. A cubic foot per minute is smaller — one cubic foot per minute equals 0.0004719474 cubic meters per second, while one cubic meter per second equals 2118.88 cubic feet per minute.