Volumetric Flow Rate
cfstoL/s
Convert cubic feet per second (cfs) to litres per second (L/s).
Factor1 cfs = 28.31685 L/s
Converter
cfs
Accepts numbers or expressions, e.g. 150 + 14.7
Result
L/s
Rendered to 6 significant figures.
Formula
Formula
L/s = cfs × 28.31685
Multiply any value in cubic feet per second by 28.31685 to obtain the value in litres per second.
Worked example
Convert 1 cfs to L/s.
- 01Start with 1 cfs.
- 02Multiply by the conversion factor: 1 × 28.31685 = 28.3168 L/s.
Result1 cfs = 28.3168 L/s
Conversion table
| cfs | L/s |
|---|---|
| 1 | 28.317 |
| 2 | 56.634 |
| 5 | 141.58 |
| 10 | 283.17 |
| 20 | 566.34 |
| 50 | 1415.8 |
| 100 | 2831.7 |
| 200 | 5663.4 |
| 500 | 14158 |
| 1000 | 28317 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from cfs to L/s?
1 cfs equals 28.31685 L/s. To convert, multiply the value in cubic feet per second by 28.31685.
How do I convert 1 cfs to L/s?
1 cfs = 28.3168 L/s. For any value, multiply by 28.31685.
How do I convert L/s back to cfs?
Divide by the same factor — or equivalently, multiply by 0.03531467. So 1 L/s = 0.0353147 cfs.
When would I need to convert cubic foot per second to litre 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. cfs to L/s 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).