Cubic Foot per Second to Cubic Meter per Second (CFS to m³/s)
Convert CFS to m³/s — Flow Rate converter
Also written as CFS to m3/s.
One cubic foot per second equals 0.02831685 m³/s, so to convert cubic feet per second to cubic meters per second you multiply the value by 0.02831685. A cubic foot per second is smaller than a cubic meter per second — going the other way, 1 m³/s = 35.314667 CFS. For example, 10 CFS = 0.28316847 m³/s and 50 CFS = 1.415842 m³/s.
1 CFS = 0.02831685 m³/s
Cubic Foot per Second to Cubic Meter per Second formula
1 Cubic Foot per Second = 0.02831685 m³/s
Worked examples
- 25 CFS = 0.70792116 m³/s
- 100 CFS = 2.831685 m³/s
Cubic Foot per Second to Cubic Meter per Second conversion table
| Cubic Foot per Second (CFS) | Cubic Meter per Second (m³/s) |
|---|---|
| 1 | 0.02831685 |
| 2 | 0.05663369 |
| 3 | 0.08495054 |
| 5 | 0.14158423 |
| 8 | 0.22653477 |
| 10 | 0.28316847 |
| 12 | 0.33980216 |
| 15 | 0.4247527 |
| 20 | 0.56633693 |
| 25 | 0.70792116 |
| 50 | 1.415842 |
| 100 | 2.831685 |
| 250 | 7.079212 |
| 500 | 14.158423 |
| 1000 | 28.316847 |
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 CFS = 0.02831685 m³/s.
Frequently asked questions
How many cubic meters per second are in one cubic foot per second?
One cubic foot per second equals 0.02831685 cubic meters per second (m³/s).
How many cubic feet per second are in one cubic meter per second?
One cubic meter per second equals 35.314667 cubic feet per second (CFS).
How do you convert cubic feet per second to cubic meters per second?
1 Cubic Foot per Second = 0.02831685 m³/s. Use the calculator above for any value.
What is 5 CFS in m³/s?
5 CFS = 0.14158423 m³/s.
What is 100 CFS in m³/s?
100 CFS = 2.831685 m³/s.
What is 10 CFS in m³/s?
10 CFS = 0.28316847 m³/s.
What is 20 CFS in m³/s?
20 CFS = 0.56633693 m³/s.
What is 50 CFS in m³/s?
50 CFS = 1.415842 m³/s.
What is 500 CFS in m³/s?
500 CFS = 14.158423 m³/s.
Is a cubic foot per second bigger than a cubic meter per second?
No. A cubic foot per second is smaller — one cubic foot per second equals 0.02831685 cubic meters per second, while one cubic meter per second equals 35.314667 cubic feet per second.