Convert Cubic feet per second to Gallons per minute
Instantly convert Cubic feet per second (ft³/s) to Gallons per minute (GPM) with our free online calculator.
Formula: ft³/s to GPM — multiply by 448.83
Reference Table
| Cubic feet per second (ft³/s) | Gallons per minute (GPM) |
|---|---|
| 1 | 448.83 |
| 5 | 2244.15 |
| 10 | 4488.3 |
| 25 | 11220.8 |
| 50 | 22441.5 |
| 100 | 44883 |
How to Convert Cubic feet per second to Gallons per minute
Formula
To convert Cubic feet per second (ft³/s) to Gallons per minute (GPM): multiply by 448.83
Step-by-Step
- Start with your value in Cubic feet per second (ft³/s).
- Multiply by 448.83 to perform the conversion.
- The result is your value expressed in Gallons per minute (GPM).
Conversion Factor
1 ft³/s = 448.83 GPM
Reverse Factor
1 GPM = 0.00222801 ft³/s
Worked Example
Convert 25 Cubic feet per second to Gallons per minute: 25 ft³/s = 11220.8 GPM
About Cubic foot per second (ft³/s)
An imperial flow-rate unit used in US hydrology, river discharge measurement, and large-scale water-supply engineering. Also called "cusec" in water-resources jargon. Typical US river flow-rate reports (USGS streamgages) use cfs. A rainstorm runoff event in a small watershed might reach 100–500 cfs. 1 ft³/s = 7.48 gallons/second ≈ 28.3 L/s.
About Gallon per minute (GPM)
A US customary flow-rate unit (US gallons per minute) used in plumbing, HVAC, fire protection, and swimming-pool circulation. GPM is the primary US sizing unit for residential water softeners, well pumps, sprinkler systems, and NFPA-standard fire-protection systems. A typical US showerhead is 2–2.5 GPM; a 4-inch fire hydrant can deliver 500–1,500 GPM. 1 GPM ≈ 3.785 L/min.
Quick Facts
- 1 Cubic foot per second equals 448.83 Gallons per minute
- 1 Gallon per minute equals 0.00222801 Cubic feet per second
- Cubic foot per second is a unit of volumetric flow rate
- Gallon per minute 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
Common Cubic foot per second to Gallon per minute Conversions
| Cubic feet per second (ft³/s) | Gallons per minute (GPM) |
|---|---|
| 0.01 | 4.4883 |
| 0.1 | 44.883 |
| 0.25 | 112.208 |
| 0.5 | 224.415 |
| 1 | 448.83 |
| 2 | 897.661 |
| 3 | 1346.49 |
| 5 | 2244.15 |
| 10 | 4488.3 |
| 15 | 6732.46 |
| 20 | 8976.61 |
| 25 | 11220.8 |
| 50 | 22441.5 |
| 75 | 33662.3 |
| 100 | 44883 |
| 250 | 112208 |
| 500 | 224415 |
| 1000 | 448830 |
| 5000 | 2244150 |
| 10000 | 4488300 |
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 in US hydrology, river discharge measurement, and large-scale water-supply engineering. Also called "cusec" in water-resources jargon. Typical US river flow-rate reports (USGS streamgages) use cfs. A rainstorm runoff event in a small watershed might reach 100–500 cfs. 1 ft³/s = 7.48 gallons/second ≈ 28.3 L/s.
It belongs to the imperial measurement system.
Cubic feet per second are commonly used in plumbing, HVAC systems, and chemical process engineering.
Understanding Gallons per minute
The Gallon per minute (symbol: GPM) is a unit of volumetric flow rate. A US customary flow-rate unit (US gallons per minute) used in plumbing, HVAC, fire protection, and swimming-pool circulation. GPM is the primary US sizing unit for residential water softeners, well pumps, sprinkler systems, and NFPA-standard fire-protection systems. A typical US showerhead is 2–2.5 GPM; a 4-inch fire hydrant can deliver 500–1,500 GPM. 1 GPM ≈ 3.785 L/min.
It belongs to the imperial measurement system.
Gallons per minute are commonly used in plumbing, HVAC systems, and chemical process engineering.
Why Convert Cubic feet per second to Gallons per minute?
Converting between Cubic feet per second and Gallons per minute 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 Gallons per minute?
An imperial flow-rate unit used in US hydrology, river discharge measurement, and large-scale water-supply engineering. To convert Cubic feet per second to Gallons per minute, multiply by 448.83. For example, 25 ft³/s equals 11220.8 GPM.
How many Gallons per minute are in 1 Cubic foot per second?
There are 448.83 Gallons per minute in 1 Cubic foot per second.
How many Cubic feet per second are in 1 Gallon per minute?
There are 0.00222801 Cubic feet per second in 1 Gallon per minute.
What is the formula for Cubic foot per second to Gallon per minute conversion?
The formula is: multiply by 448.83. This means 1 ft³/s = 448.83 GPM.
Is a Cubic foot per second bigger than a Gallon per minute?
No. One Cubic foot per second is smaller than one Gallon per minute because 1 ft³/s equals 448.83 GPM, which is greater than 1.
When do you need to convert between Cubic feet per second and Gallons per minute?
A US customary flow-rate unit (US gallons per minute) used in plumbing, HVAC, fire protection, and swimming-pool circulation. Cubic foot per second and Gallon per minute 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.