Convert Cubic feet per second to Liters per second
Instantly convert Cubic feet per second (ft³/s) to Liters per second (L/s) with our free online calculator.
Formula: ft³/s to L/s — multiply by 28.3168
Reference Table
| Cubic feet per second (ft³/s) | Liters per second (L/s) |
|---|---|
| 1 | 28.3168 |
| 5 | 141.584 |
| 10 | 283.168 |
| 25 | 707.92 |
| 50 | 1415.84 |
| 100 | 2831.68 |
How to Convert Cubic feet per second to Liters per second
Formula
To convert Cubic feet per second (ft³/s) to Liters per second (L/s): multiply by 28.3168
Step-by-Step
- Start with your value in Cubic feet per second (ft³/s).
- Multiply by 28.3168 to perform the conversion.
- The result is your value expressed in Liters per second (L/s).
Conversion Factor
1 ft³/s = 28.3168 L/s
Reverse Factor
1 L/s = 0.0353147 ft³/s
Worked Example
Convert 25 Cubic feet per second to Liters per second: 25 ft³/s = 707.92 L/s
About Cubic foot per second (ft³/s)
An imperial flow-rate unit used predominantly in US hydrology, river-discharge measurement, water-resource engineering, and large-scale waterworks design. Also called "cfs" or the colloquial "cusec" in US water-resources jargon. The US Geological Survey (USGS) StreamStats and the National Water Information System publish all US river streamgage data in cfs — a federal reporting standard since the 1950s. US Army Corps of Engineers flood-routing analyses, FEMA flood-insurance studies, and state water-rights records (especially in the western US under prior-appropriation doctrine) all measure discharge in cfs. Reference values: a small headwater stream might flow 5-20 cfs at base flow and 200-500 cfs during a 100-year storm; the Colorado River below Glen Canyon Dam is typically 8,000-25,000 cfs; the lower Mississippi runs 350,000-600,000 cfs depending on the season. 1 ft³/s = 7.4805 US gallons per second = 449 GPM = 28.32 L/s = 0.02832 m³/s.
About Liter per second (L/s)
A metric flow-rate unit equal to exactly 0.001 m³/s. L/s is the typical unit for plumbing fixtures in metric-using countries, the SI-aligned sizing unit for water-supply mains (per ISO 4064 water meter specs and EN 805 European water-supply standard), fire-pump capacities (often dual-listed in L/s and m³/hr on European fire-rated pumps), and medium-flow industrial processes. Reference values: a typical kitchen faucet flows 0.1-0.15 L/s, a metric shower head 0.13-0.20 L/s, a 50 mm domestic-water service ~3-5 L/s, a 100 mm fire-hydrant supply main 30-60 L/s. Converting L/s to GPM (US gallons per minute) is multiply by 15.85 — one of the most-needed unit conversions for buyers of imported European pump/plumbing equipment specifying performance in metric units. 1 L/s = 60 L/min = 3.6 m³/hr.
Quick Facts
- 1 Cubic foot per second equals 28.3168 Liters per second
- 1 Liter per second equals 0.0353147 Cubic feet per second
- Cubic foot per second is a unit of volumetric flow rate
- Liter per second is a unit of volumetric flow rate
- This conversion is commonly used in plumbing, HVAC systems, and chemical process engineering
- The Cubic foot per second belongs to the imperial system
- The Liter per second belongs to the metric system
Common Cubic foot per second to Liter per second Conversions
| Cubic feet per second (ft³/s) | Liters per second (L/s) |
|---|---|
| 0.01 | 0.283168 |
| 0.1 | 2.83168 |
| 0.25 | 7.0792 |
| 0.5 | 14.1584 |
| 1 | 28.3168 |
| 2 | 56.6336 |
| 3 | 84.9504 |
| 5 | 141.584 |
| 10 | 283.168 |
| 15 | 424.752 |
| 20 | 566.336 |
| 25 | 707.92 |
| 50 | 1415.84 |
| 75 | 2123.76 |
| 100 | 2831.68 |
| 250 | 7079.2 |
| 500 | 14158.4 |
| 1000 | 28316.8 |
| 5000 | 141584 |
| 10000 | 283168 |
Understanding Cubic feet per second
The Cubic foot per second (symbol: ft³/s) is a unit of volumetric flow rate. An imperial flow-rate unit used predominantly in US hydrology, river-discharge measurement, water-resource engineering, and large-scale waterworks design. Also called "cfs" or the colloquial "cusec" in US water-resources jargon. The US Geological Survey (USGS) StreamStats and the National Water Information System publish all US river streamgage data in cfs — a federal reporting standard since the 1950s. US Army Corps of Engineers flood-routing analyses, FEMA flood-insurance studies, and state water-rights records (especially in the western US under prior-appropriation doctrine) all measure discharge in cfs. Reference values: a small headwater stream might flow 5-20 cfs at base flow and 200-500 cfs during a 100-year storm; the Colorado River below Glen Canyon Dam is typically 8,000-25,000 cfs; the lower Mississippi runs 350,000-600,000 cfs depending on the season. 1 ft³/s = 7.4805 US gallons per second = 449 GPM = 28.32 L/s = 0.02832 m³/s.
It belongs to the imperial measurement system.
Cubic feet per second are commonly used in plumbing, HVAC systems, and chemical process engineering.
Understanding Liters per second
The Liter per second (symbol: L/s) is a unit of volumetric flow rate. A metric flow-rate unit equal to exactly 0.001 m³/s. L/s is the typical unit for plumbing fixtures in metric-using countries, the SI-aligned sizing unit for water-supply mains (per ISO 4064 water meter specs and EN 805 European water-supply standard), fire-pump capacities (often dual-listed in L/s and m³/hr on European fire-rated pumps), and medium-flow industrial processes. Reference values: a typical kitchen faucet flows 0.1-0.15 L/s, a metric shower head 0.13-0.20 L/s, a 50 mm domestic-water service ~3-5 L/s, a 100 mm fire-hydrant supply main 30-60 L/s. Converting L/s to GPM (US gallons per minute) is multiply by 15.85 — one of the most-needed unit conversions for buyers of imported European pump/plumbing equipment specifying performance in metric units. 1 L/s = 60 L/min = 3.6 m³/hr.
It belongs to the metric measurement system.
Liters per second are commonly used in plumbing, HVAC systems, and chemical process engineering.
Why Convert Cubic feet per second to Liters per second?
Converting between Cubic feet per second and Liters per second is a frequent requirement for engineers, scientists, and students working with volumetric flow rate values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate volumetric flow rate conversion is essential.
Frequently Asked Questions
How do I convert Cubic feet per second to Liters per second?
An imperial flow-rate unit used predominantly in US hydrology, river-discharge measurement, water-resource engineering, and large-scale waterworks design. To convert Cubic feet per second to Liters per second, multiply by 28.3168. For example, 25 ft³/s equals 707.92 L/s.
How many Liters per second are in 1 Cubic foot per second?
There are 28.3168 Liters per second in 1 Cubic foot per second.
How many Cubic feet per second are in 1 Liter per second?
There are 0.0353147 Cubic feet per second in 1 Liter per second.
What is the formula for Cubic foot per second to Liter per second conversion?
The formula is: multiply by 28.3168. This means 1 ft³/s = 28.3168 L/s.
Is a Cubic foot per second bigger than a Liter per second?
No. One Cubic foot per second is smaller than one Liter per second because 1 ft³/s equals 28.3168 L/s, which is greater than 1.
When do you need to convert between Cubic feet per second and Liters per second?
A metric flow-rate unit equal to exactly 0. Cubic foot per second and Liter per second are both volumetric flow units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.