Cubic Foot per Second to Liter per Second (CFS to LPS)
Convert CFS to LPS — Flow Rate converter
One cubic foot per second equals 28.316847 LPS, so to convert cubic feet per second to liters per second you multiply the value by 28.316847. A cubic foot per second is larger than a liter per second — going the other way, 1 LPS = 0.03531467 CFS. For example, 10 CFS = 283.168466 LPS and 50 CFS = 1415.84 LPS.
1 CFS = 28.316847 LPS
Cubic Foot per Second to Liter per Second formula
1 Cubic Foot per Second = 28.316847 LPS
Worked examples
- 25 CFS = 707.921165 LPS
- 100 CFS = 2831.68 LPS
Cubic Foot per Second to Liter per Second conversion table
| Cubic Foot per Second (CFS) | Liter per Second (LPS) |
|---|---|
| 1 | 28.316847 |
| 2 | 56.633693 |
| 3 | 84.95054 |
| 5 | 141.584233 |
| 8 | 226.534773 |
| 10 | 283.168466 |
| 12 | 339.802159 |
| 15 | 424.752699 |
| 20 | 566.336932 |
| 25 | 707.921165 |
| 50 | 1415.84 |
| 100 | 2831.68 |
| 250 | 7079.21 |
| 500 | 14158.42 |
| 1000 | 28316.85 |
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 = 28.316847 LPS.
Frequently asked questions
How many liters per second are in one cubic foot per second?
One cubic foot per second equals 28.316847 liters per second (LPS).
How many cubic feet per second are in one liter per second?
One liter per second equals 0.03531467 cubic feet per second (CFS).
How do you convert cubic feet per second to liters per second?
1 Cubic Foot per Second = 28.316847 LPS. Use the calculator above for any value.
What is 5 CFS in LPS?
5 CFS = 141.584233 LPS.
What is 100 CFS in LPS?
100 CFS = 2831.68 LPS.
What is 10 CFS in LPS?
10 CFS = 283.168466 LPS.
What is 20 CFS in LPS?
20 CFS = 566.336932 LPS.
What is 50 CFS in LPS?
50 CFS = 1415.84 LPS.
What is 500 CFS in LPS?
500 CFS = 14158.42 LPS.
Is a cubic foot per second bigger than a liter per second?
Yes. A cubic foot per second is larger — one cubic foot per second equals 28.316847 liters per second (LPS).