Volumetric flow rate.
Quarts per Millisecond to Gallon per Minutes Converter — qt/ms to gal/min
Convert Quart per Millisecond (qt/ms) to Gallon per Minutes (gal/min) using the exact conversion factor (1 quart per millisecond = 15,000 gallon per minutes). See the formula, worked examples, conversion table, and common uses.
Quarts per Millisecond to Gallon per Minutes 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 0.946352946 / 6.30901964e-5.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Quarts per Millisecond to Gallon per Minutes
Quart per Millisecond and Gallon per Minutes 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 minutes = quarts per millisecond × 15000
This factor comes from each unit's defined relationship to the category's base unit: 1 quart per millisecond equals 0.946352946 base units, and 1 gallon per minutes equals 0.0000630901964 base units, so dividing one by the other gives the direct quart per millisecond-to-gallon per minutes factor of 15000.
Simple example
1 qt/ms × 15000 = 15,000 gal/min
1 quart per millisecond = 15,000 gallon per minutes.
Real-world example
60 qt/ms × 15000 = 900,000 gal/min
60 quarts per millisecond = 900,000 gallon per minutes.
Conversion table
| Quart per Millisecond (qt/ms) | Gallon per Minutes (gal/min) |
|---|---|
| 0.1 qt/ms | 1,500 gal/min |
| 1 qt/ms | 15,000 gal/min |
| 10 qt/ms | 150,000 gal/min |
| 60 qt/ms | 900,000 gal/min |
| 100 qt/ms | 1,500,000 gal/min |
| 1,000 qt/ms | 15,000,000 gal/min |
Reverse conversion: Gallon per Minutes to Quart per Millisecond
1 gal/min × 0.00006666666667 = 0.0000666667 qt/ms
1 gallon per minutes = 0.0000666667 quarts per millisecond.
quarts per millisecond = gallon per minutes × 0.0000666666666667
For a page dedicated to this direction, see Gallon per Minutes to Quart per Millisecond.
Understanding the Quart per Millisecond (qt/ms)
Volumetric flow rate.
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
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 gallon per minutes are in 1 quart per millisecond?
1 quart per millisecond equals 15,000 gallon per minutes, using the exact defined conversion factor rather than an estimate.
How do I convert quart per millisecond to gallon per minutes?
Multiply the quart per millisecond value by 15000. The converter above does this instantly to whatever precision you set.
How do I convert gallon per minutes back to quart per millisecond?
Use the reverse factor: 1 gallon per minutes equals 0.0000666667 quarts per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a quart per millisecond?
Quart per Millisecond (qt/ms) is a unit of flow rate.
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.
Is the quart per millisecond to gallon per minutes conversion exact?
Yes. Both quart per millisecond and gallon per minutes are defined by fixed standards rather than physical artifacts, so the factor of 15000 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.