US Gallons per Hour to Cubic Feet per Second
Convert US Gallons per Hour to Cubic Feet per Second instantly. Free online flow rate unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for US Gallons per Hour to Cubic Feet per Second conversions.
Reserved above the conversion cards and below the converter.
Formula
ft3/s = gal/h × 3.71335e-5
gal/h = ft3/s ÷ 3.71335e-5
Conversion table
| 1 gal/h | 3.71335e-5 ft3/s |
| 5 gal/h | 0.000185667 ft3/s |
| 10 gal/h | 0.000371335 ft3/s |
| 20 gal/h | 0.00074267 ft3/s |
| 50 gal/h | 0.00185667 ft3/s |
| 100 gal/h | 0.00371335 ft3/s |
| 500 gal/h | 0.0185667 ft3/s |
| 1000 gal/h | 0.0371335 ft3/s |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is us gallons per hour (gal/h). The US Gallon (gal) is a unit of volume. The Hour (h) is a unit of time.
What is the destination unit in this conversion?
The destination unit is cubic feet per second (ft3/s). The Cubic Foot (ft3) is a unit of volume. The Second (s) is a unit of time.
How do I convert us gallons per hour to cubic feet per second?
Multiply the us gallons per hour value by 3.71335e-5 to get cubic feet per second. For example, 10 gal/h × 3.71335e-5 = 0.000371335 ft3/s.
Is the us gallons per hour to cubic feet per second conversion exact?
It's exact under the SI-based volume and time definitions used here, since both units convert to cubic meters per second through fixed, non-rounded factors.
Where is this conversion commonly used?
Flow rate conversions like this are used in plumbing, HVAC, irrigation, chemical processing, fuel and water metering, and engineering flow calculations.
Can I convert cubic feet per second back to us gallons per hour?
Yes. Divide the cubic feet per second value by 3.71335e-5 (or multiply by 26929.9) to get us gallons per hour.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts us gallons per hour (gal/h) into cubic feet per second (ft3/s), two units of volumetric flow rate.
The US Gallon (gal) is a unit of volume. The Hour (h) is a unit of time.
The Cubic Foot (ft3) is a unit of volume. The Second (s) is a unit of time.
The formula is ft3/s = gal/h × 3.71335e-5, based on the fixed relationship between these two flow rate units.
Flow rate is calculated as a volume unit divided by a time unit, so every combination of a volume unit and a time unit forms a valid, exact flow rate unit.