Volumetric flow rate.
Cubic foot per Seconds to Liter per Seconds Converter — ft3/s to L/s
Convert Cubic foot per Seconds (ft3/s) to Liter per Seconds (L/s) using the exact conversion factor (1 cubic foot per seconds = 28.31684659 liter per seconds). See the formula, worked examples, conversion table, unit comparison, and common uses.
Cubic foot per Seconds to Liter per Seconds converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 0.02831684659 / 0.001.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic foot per Seconds to Liter per Seconds
Cubic foot per Seconds and Liter per Seconds both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Cubic foot per Seconds is typically associated with united States, while Liter per Seconds is typically associated with common in municipal water-utility and industrial flow specifications internationally.
Formula
liter per seconds = cubic foot per seconds × 28.316846592
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot per seconds equals 0.028316846592 base units, and 1 liter per seconds equals 0.001 base units, so dividing one by the other gives the direct cubic foot per seconds-to-liter per seconds factor of 28.316846592.
Simple example
1 ft3/s × 28.31684659 = 28.31684659 L/s
1 cubic foot per seconds = 28.31684659 liter per seconds.
Real-world example
60 ft3/s × 28.31684659 = 1,699.010796 L/s
60 cubic foot per seconds = 1,699.010796 liter per seconds.
Conversion table
| Cubic foot per Seconds (ft3/s) | Liter per Seconds (L/s) |
|---|---|
| 0.1 ft3/s | 2.831684659 L/s |
| 1 ft3/s | 28.31684659 L/s |
| 10 ft3/s | 283.1684659 L/s |
| 60 ft3/s | 1,699.010796 L/s |
| 100 ft3/s | 2,831.684659 L/s |
| 1,000 ft3/s | 28,316.84659 L/s |
Reverse conversion: Liter per Seconds to Cubic foot per Seconds
28.31684659 L/s × 0.03531466672 = 0.9999999999 ft3/s
28.31684659 liter per seconds = 0.9999999999 cubic foot per seconds.
cubic foot per seconds = liter per seconds × 0.0353146667215
For a page dedicated to this direction, see Liter per Seconds to Cubic foot per Seconds.
Cubic foot per Seconds vs. Liter per Seconds
| Aspect | Cubic foot per Seconds | Liter per Seconds |
|---|---|---|
| Family | US customary flow-rate unit | metric derived flow-rate unit |
| Typical use | The standard unit used by the US Geological Survey for reporting river and stream discharge at gauging stations | Municipal water supply and treatment plant flow rates |
| Where it's used | United States | Common in municipal water-utility and industrial flow specifications internationally |
Understanding the Cubic foot per Seconds
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Where it's used: United States
Uses of the Cubic foot per Seconds today
- The standard unit used by the US Geological Survey for reporting river and stream discharge at gauging stations
Understanding the Liter per Seconds
Liter per Seconds (L/s) measures volumetric flow rate. One liter of volume passing a point every second — used for larger flows than liter-per-minute conveniently describes. It is classified as a metric derived flow-rate unit.
Where it's used: Common in municipal water-utility and industrial flow specifications internationally
L/s vs. L/min. Both measure the same quantity at different time scales; 1 L/s equals 60 L/min. L/s is typically used for larger, continuous industrial or utility flows, while L/min suits smaller household-scale flows.
Uses of the Liter per Seconds today
- Municipal water supply and treatment plant flow rates
- Industrial process flow specifications
- Stream and river discharge measurement at moderate scales
Cubic foot per Seconds — sources
- USGS Water Science School — Cubic feet per second (cfs) is the standard unit USGS uses to report streamflow.
Liter per Seconds — sources
- BIPM SI Brochure — Litre and second as accepted units used together to express flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many liter per seconds are in 1 cubic foot per seconds?
1 cubic foot per seconds equals 28.31684659 liter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot per seconds to liter per seconds?
Multiply the cubic foot per seconds value by 28.31684659. The converter above does this instantly to whatever precision you set.
How do I convert liter per seconds back to cubic foot per seconds?
Use the reverse factor: 1 liter per seconds equals 0.0353146667 cubic foot per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic foot per seconds?
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
What is a liter per seconds?
Liter per Seconds (L/s) measures volumetric flow rate. One liter of volume passing a point every second — used for larger flows than liter-per-minute conveniently describes. It is classified as a metric derived flow-rate unit.
Is the cubic foot per seconds to liter per seconds conversion exact?
Yes. Both cubic foot per seconds and liter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 28.31684659 used above is exact to as many digits as you choose to display.
What is the difference between l/s vs. l/min?
Both measure the same quantity at different time scales; 1 L/s equals 60 L/min. L/s is typically used for larger, continuous industrial or utility flows, while L/min suits smaller household-scale flows.
Where is the cubic foot per seconds still used today?
United States