Convert Cubic feet per second to Gallons per hour
Instantly convert Cubic feet per second (ft³/s) to Gallons per hour (GPH) with our free online calculator.
Formula: ft³/s to GPH — multiply by 26929.7
Reference Table
| Cubic feet per second (ft³/s) | Gallons per hour (GPH) |
|---|---|
| 1 | 26929.7 |
| 5 | 134648 |
| 10 | 269297 |
| 25 | 673241 |
| 50 | 1346480 |
| 100 | 2692970 |
How to Convert Cubic feet per second to Gallons per hour
Formula
To convert Cubic feet per second (ft³/s) to Gallons per hour (GPH): multiply by 26929.7
Step-by-Step
- Start with your value in Cubic feet per second (ft³/s).
- Multiply by 26929.7 to perform the conversion.
- The result is your value expressed in Gallons per hour (GPH).
Conversion Factor
1 ft³/s = 26929.7 GPH
Reverse Factor
1 GPH = 0.0000371338 ft³/s
Worked Example
Convert 25 Cubic feet per second to Gallons per hour: 25 ft³/s = 673241 GPH
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 Gallon per hour (GPH)
A US flow-rate unit (US gallons per hour) used for slow, metered, or steady-state low-flow applications. Common applications: aquarium and pond circulation pumps (a typical canister filter for a 75-gallon aquarium delivers 250-350 GPH), water-feature and fountain recirculators, agricultural drip-irrigation emitters (rated 0.5-4 GPH at design pressure per ASABE EP458), residential oil-burner fuel nozzle ratings (most US oil furnaces use 0.5-2.0 GPH nozzles), commercial fuel-dispensing meters (where GPH is the throughput rating, often combined with a separate gallons-pumped-per-minute peak), and reverse-osmosis water-purification membranes (GPH membrane capacity is the marketing spec on most US residential RO systems). Marine fuel-flow meters typically report consumption in GPH, a useful figure for cruising range and fuel-burn-per-mile calculations. 1 GPH = 0.01667 GPM = 0.0631 L/min = 1.0515 × 10⁻⁶ m³/s.
Quick Facts
- 1 Cubic foot per second equals 26929.7 Gallons per hour
- 1 Gallon per hour equals 0.0000371338 Cubic feet per second
- Cubic foot per second is a unit of volumetric flow rate
- Gallon per hour 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 hour Conversions
| Cubic feet per second (ft³/s) | Gallons per hour (GPH) |
|---|---|
| 0.01 | 269.297 |
| 0.1 | 2692.97 |
| 0.25 | 6732.41 |
| 0.5 | 13464.8 |
| 1 | 26929.7 |
| 2 | 53859.3 |
| 3 | 80789 |
| 5 | 134648 |
| 10 | 269297 |
| 15 | 403945 |
| 20 | 538593 |
| 25 | 673241 |
| 50 | 1346480 |
| 75 | 2019720 |
| 100 | 2692970 |
| 250 | 6732410 |
| 500 | 13464800 |
| 1000 | 26929700 |
| 5000 | 134648000 |
| 10000 | 269297000 |
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 Gallons per hour
The Gallon per hour (symbol: GPH) is a unit of volumetric flow rate. A US flow-rate unit (US gallons per hour) used for slow, metered, or steady-state low-flow applications. Common applications: aquarium and pond circulation pumps (a typical canister filter for a 75-gallon aquarium delivers 250-350 GPH), water-feature and fountain recirculators, agricultural drip-irrigation emitters (rated 0.5-4 GPH at design pressure per ASABE EP458), residential oil-burner fuel nozzle ratings (most US oil furnaces use 0.5-2.0 GPH nozzles), commercial fuel-dispensing meters (where GPH is the throughput rating, often combined with a separate gallons-pumped-per-minute peak), and reverse-osmosis water-purification membranes (GPH membrane capacity is the marketing spec on most US residential RO systems). Marine fuel-flow meters typically report consumption in GPH, a useful figure for cruising range and fuel-burn-per-mile calculations. 1 GPH = 0.01667 GPM = 0.0631 L/min = 1.0515 × 10⁻⁶ m³/s.
It belongs to the imperial measurement system.
Gallons per hour are commonly used in plumbing, HVAC systems, and chemical process engineering.
Why Convert Cubic feet per second to Gallons per hour?
Converting between Cubic feet per second and Gallons per hour 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 hour?
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 Gallons per hour, multiply by 26929.7. For example, 25 ft³/s equals 673241 GPH.
How many Gallons per hour are in 1 Cubic foot per second?
There are 26929.7 Gallons per hour in 1 Cubic foot per second.
How many Cubic feet per second are in 1 Gallon per hour?
There are 0.0000371338 Cubic feet per second in 1 Gallon per hour.
What is the formula for Cubic foot per second to Gallon per hour conversion?
The formula is: multiply by 26929.7. This means 1 ft³/s = 26929.7 GPH.
Is a Cubic foot per second bigger than a Gallon per hour?
No. One Cubic foot per second is smaller than one Gallon per hour because 1 ft³/s equals 26929.7 GPH, which is greater than 1.
When do you need to convert between Cubic feet per second and Gallons per hour?
A US flow-rate unit (US gallons per hour) used for slow, metered, or steady-state low-flow applications. Cubic foot per second and Gallon per hour 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.