Volumetric flow rate.
Gallon per Minutes to Fluid ounces per Millisecond Converter — gal/min to fl oz/ms
Convert Gallon per Minutes (gal/min) to Fluid ounce per Millisecond (fl oz/ms) using the exact conversion factor (1 gallon per minutes = 0.0021333333 fluid ounce per millisecond). See the formula, worked examples, conversion table, and common uses.
Gallon per Minutes to Fluid ounces 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 6.30901964e-5 / 0.02957352956.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Minutes to Fluid ounces per Millisecond
Gallon per Minutes and Fluid ounce 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. Gallon per Minutes is most often used for us residential and commercial plumbing fixture flow ratings.
Formula
fluid ounces per millisecond = gallon per minutes × 0.00213333333333
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per minutes equals 0.0000630901964 base units, and 1 fluid ounce per millisecond equals 0.0295735295625 base units, so dividing one by the other gives the direct gallon per minutes-to-fluid ounce per millisecond factor of 0.00213333333333.
Simple example
1 gal/min × 0.002133333333 = 0.0021333333 fl oz/ms
1 gallon per minutes = 0.0021333333 fluid ounces per millisecond.
Real-world example
60 gal/min × 0.002133333333 = 0.128 fl oz/ms
60 gallon per minutes = 0.128 fluid ounces per millisecond.
Conversion table
| Gallon per Minutes (gal/min) | Fluid ounce per Millisecond (fl oz/ms) |
|---|---|
| 0.1 gal/min | 0.0002133333 fl oz/ms |
| 1 gal/min | 0.0021333333 fl oz/ms |
| 10 gal/min | 0.0213333333 fl oz/ms |
| 60 gal/min | 0.128 fl oz/ms |
| 100 gal/min | 0.2133333333 fl oz/ms |
| 1,000 gal/min | 2.133333333 fl oz/ms |
Reverse conversion: Fluid ounce per Millisecond to Gallon per Minutes
0.0021333333 fl oz/ms × 468.75 = 0.9999999844 gal/min
0.0021333333 fluid ounces per millisecond = 0.9999999844 gallon per minutes.
gallon per minutes = fluid ounces per millisecond × 468.75
For a page dedicated to this direction, see Fluid ounce per Millisecond to Gallon per Minutes.
Understanding the Gallon per Minutes
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
Where it's used: United States (plumbing, pump, and irrigation industry standard)
Uses of the Gallon per Minutes today
- US residential and commercial plumbing fixture flow ratings
- US pump and irrigation system specifications
- US pool and spa filtration system sizing
Understanding the Fluid ounce per Millisecond (fl oz/ms)
Volumetric flow rate.
Gallon per Minutes — sources
- NIST Handbook 44 — General tables of units including US customary flow-rate measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many fluid ounces per millisecond are in 1 gallon per minutes?
1 gallon per minutes equals 0.0021333333 fluid ounces per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per minutes to fluid ounce per millisecond?
Multiply the gallon per minutes value by 0.002133333333. The converter above does this instantly to whatever precision you set.
How do I convert fluid ounce per millisecond back to gallon per minutes?
Use the reverse factor: 1 fluid ounce per millisecond equals 468.75 gallon per minutes. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per minutes?
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
What is a fluid ounce per millisecond?
Fluid ounce per Millisecond (fl oz/ms) is a unit of flow rate.
Is the gallon per minutes to fluid ounce per millisecond conversion exact?
Yes. Both gallon per minutes and fluid ounce per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.002133333333 used above is exact to as many digits as you choose to display.
Where is the gallon per minutes still used today?
United States (plumbing, pump, and irrigation industry standard)
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.