Volumetric Flow Rate
L/stocfs
Convert litres per second (L/s) to cubic feet per second (cfs).
Factor1 L/s = 0.03531467 cfs
Converter
L/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cfs
Rendered to 6 significant figures.
Formula
Formula
cfs = L/s × 0.03531467
Multiply any value in litres per second by 0.03531467 to obtain the value in cubic feet per second.
Worked example
Convert 100 L/s to cfs.
- 01Start with 100 L/s.
- 02Multiply by the conversion factor: 100 × 0.03531467 = 3.53147 cfs.
Result100 L/s = 3.53147 cfs
Conversion table
| L/s | cfs |
|---|---|
| 1 | 0.035315 |
| 2 | 0.070629 |
| 5 | 0.17657 |
| 10 | 0.35315 |
| 20 | 0.70629 |
| 50 | 1.7657 |
| 100 | 3.5315 |
| 200 | 7.0629 |
| 500 | 17.657 |
| 1000 | 35.315 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from L/s to cfs?
1 L/s equals 0.03531467 cfs. To convert, multiply the value in litres per second by 0.03531467.
How do I convert 1 L/s to cfs?
1 L/s = 0.0353147 cfs. For any value, multiply by 0.03531467.
How do I convert cfs back to L/s?
Divide by the same factor — or equivalently, multiply by 28.31685. So 1 cfs = 28.3168 L/s.
When would I need to convert litre per second to cubic foot per second?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. L/s to cfs is a frequently needed conversion for hydraulic sizing.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).