Volumetric flow rate.
Gallon per Seconds to Fluid ounce per Seconds Converter — gal/s to fl oz/s
Convert Gallon per Seconds (gal/s) to Fluid ounce per Seconds (fl oz/s) using the exact conversion factor (1 gallon per seconds = 128 fluid ounce per seconds). See the formula, worked examples, and conversion table.
Gallon per Seconds to Fluid ounce 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 0.003785411784 / 2.95735296e-5.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Seconds to Fluid ounce per Seconds
Gallon per Seconds and Fluid ounce 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
fluid ounce per seconds = gallon per seconds × 128
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per seconds equals 0.003785411784 base units, and 1 fluid ounce per seconds equals 0.0000295735295625 base units, so dividing one by the other gives the direct gallon per seconds-to-fluid ounce per seconds factor of 128.
Simple example
1 gal/s × 128 = 128 fl oz/s
1 gallon per seconds = 128 fluid ounce per seconds.
Real-world example
60 gal/s × 128 = 7,680 fl oz/s
60 gallon per seconds = 7,680 fluid ounce per seconds.
Conversion table
| Gallon per Seconds (gal/s) | Fluid ounce per Seconds (fl oz/s) |
|---|---|
| 0.1 gal/s | 12.8 fl oz/s |
| 1 gal/s | 128 fl oz/s |
| 10 gal/s | 1,280 fl oz/s |
| 60 gal/s | 7,680 fl oz/s |
| 100 gal/s | 12,800 fl oz/s |
| 1,000 gal/s | 128,000 fl oz/s |
Reverse conversion: Fluid ounce per Seconds to Gallon per Seconds
128 fl oz/s × 0.0078125 = 1 gal/s
128 fluid ounce per seconds = 1 gallon per seconds.
gallon per seconds = fluid ounce per seconds × 0.0078125
For a page dedicated to this direction, see Fluid ounce per Seconds to Gallon per Seconds.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Understanding the Fluid ounce per Seconds (fl oz/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many fluid ounce per seconds are in 1 gallon per seconds?
1 gallon per seconds equals 128 fluid ounce per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per seconds to fluid ounce per seconds?
Multiply the gallon per seconds value by 128. The converter above does this instantly to whatever precision you set.
How do I convert fluid ounce per seconds back to gallon per seconds?
Use the reverse factor: 1 fluid ounce per seconds equals 0.0078125 gallon per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
What is a fluid ounce per seconds?
Fluid ounce per Seconds (fl oz/s) is a unit of flow rate.
Is the gallon per seconds to fluid ounce per seconds conversion exact?
Yes. Both gallon per seconds and fluid ounce per seconds are defined by fixed standards rather than physical artifacts, so the factor of 128 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.