Volumetric flow rate.
Fluid ounce per Hours to Gallons per Millisecond Converter — fl oz/h to gal/ms
Convert Fluid ounce per Hours (fl oz/h) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 fluid ounce per hours = 2.170139e-9 gallon per millisecond). See the formula, worked examples, and conversion table.
Fluid ounce per Hours to Gallons per Millisecond 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 8.21486932e-9 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fluid ounce per Hours to Gallons per Millisecond
Fluid ounce per Hours and Gallon per Millisecond 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
gallons per millisecond = fluid ounce per hours × 2.170139e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 fluid ounce per hours equals 8.214869e-9 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct fluid ounce per hours-to-gallon per millisecond factor of 2.170139e-9.
Simple example
1 fl oz/h × 2.170139e-9 = 2.170139e-9 gal/ms
1 fluid ounce per hours = 2.170139e-9 gallons per millisecond.
Real-world example
60 fl oz/h × 2.170139e-9 = 1.302083e-7 gal/ms
60 fluid ounce per hours = 1.302083e-7 gallons per millisecond.
Conversion table
| Fluid ounce per Hours (fl oz/h) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 fl oz/h | 2.170139e-10 gal/ms |
| 1 fl oz/h | 2.170139e-9 gal/ms |
| 10 fl oz/h | 2.170139e-8 gal/ms |
| 60 fl oz/h | 1.302083e-7 gal/ms |
| 100 fl oz/h | 2.170139e-7 gal/ms |
| 1,000 fl oz/h | 0.0000021701 gal/ms |
Reverse conversion: Gallon per Millisecond to Fluid ounce per Hours
2.170139e-9 gal/ms × 460800000 = 1.000000051 fl oz/h
2.170139e-9 gallons per millisecond = 1.000000051 fluid ounce per hours.
fluid ounce per hours = gallons per millisecond × 460800000
For a page dedicated to this direction, see Gallon per Millisecond to Fluid ounce per Hours.
Understanding the Fluid ounce per Hours (fl oz/h)
Volumetric flow rate.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per millisecond are in 1 fluid ounce per hours?
1 fluid ounce per hours equals 2.170139e-9 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert fluid ounce per hours to gallon per millisecond?
Multiply the fluid ounce per hours value by 2.170139e-9. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to fluid ounce per hours?
Use the reverse factor: 1 gallon per millisecond equals 460,800,000 fluid ounce per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a fluid ounce per hours?
Fluid ounce per Hours (fl oz/h) is a unit of flow rate.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
Is the fluid ounce per hours to gallon per millisecond conversion exact?
Yes. Both fluid ounce per hours and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 2.170139e-9 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.