Volumetric flow rate.
Gallon per Hours to Gallon per Seconds Converter — gal/h to gal/s
Convert Gallon per Hours (gal/h) to Gallon per Seconds (gal/s) using the exact conversion factor (1 gallon per hours = 0.0002777778 gallon per seconds). See the formula, worked examples, and conversion table.
Gallon per Hours to Gallon 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 1.05150327e-6 / 0.003785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Hours to Gallon per Seconds
Gallon per Hours and Gallon 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. Both are volumetric flow rate units.
Formula
gallon per seconds = gallon per hours × 0.000277777777778
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per hours equals 0.00000105150327333 base units, and 1 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct gallon per hours-to-gallon per seconds factor of 0.000277777777778.
Simple example
1 gal/h × 0.0002777777778 = 0.0002777778 gal/s
1 gallon per hours = 0.0002777778 gallon per seconds.
Real-world example
60 gal/h × 0.0002777777778 = 0.0166666667 gal/s
60 gallon per hours = 0.0166666667 gallon per seconds.
Conversion table
| Gallon per Hours (gal/h) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 gal/h | 0.0000277778 gal/s |
| 1 gal/h | 0.0002777778 gal/s |
| 10 gal/h | 0.0027777778 gal/s |
| 60 gal/h | 0.0166666667 gal/s |
| 100 gal/h | 0.0277777778 gal/s |
| 1,000 gal/h | 0.2777777778 gal/s |
Reverse conversion: Gallon per Seconds to Gallon per Hours
0.0002777778 gal/s × 3600 = 1.00000008 gal/h
0.0002777778 gallon per seconds = 1.00000008 gallon per hours.
gallon per hours = gallon per seconds × 3600
For a page dedicated to this direction, see Gallon per Seconds to Gallon per Hours.
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per seconds are in 1 gallon per hours?
1 gallon per hours equals 0.0002777778 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per hours to gallon per seconds?
Multiply the gallon per hours value by 0.0002777777778. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to gallon per hours?
Use the reverse factor: 1 gallon per seconds equals 3,600 gallon per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per hours?
Gallon per Hours (gal/h) is a unit of flow rate.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the gallon per hours to gallon per seconds conversion exact?
Yes. Both gallon per hours and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.0002777777778 used above is exact to as many digits as you choose to display.
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.