Volumetric flow rate.
Gallons per Millisecond to Quarts per Millisecond Converter — gal/ms to qt/ms
Convert Gallon per Millisecond (gal/ms) to Quart per Millisecond (qt/ms) using the exact conversion factor (1 gallon per millisecond = 4 quart per millisecond). See the formula, worked examples, and conversion table.
Gallons per Millisecond to Quarts 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 3.785411784 / 0.946352946.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallons per Millisecond to Quarts per Millisecond
Gallon per Millisecond and Quart 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
quarts per millisecond = gallons per millisecond × 4
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per millisecond equals 3.785411784 base units, and 1 quart per millisecond equals 0.946352946 base units, so dividing one by the other gives the direct gallon per millisecond-to-quart per millisecond factor of 4.
Simple example
1 gal/ms × 4 = 4 qt/ms
1 gallon per millisecond = 4 quarts per millisecond.
Real-world example
60 gal/ms × 4 = 240 qt/ms
60 gallons per millisecond = 240 quarts per millisecond.
Conversion table
| Gallon per Millisecond (gal/ms) | Quart per Millisecond (qt/ms) |
|---|---|
| 0.1 gal/ms | 0.4 qt/ms |
| 1 gal/ms | 4 qt/ms |
| 10 gal/ms | 40 qt/ms |
| 60 gal/ms | 240 qt/ms |
| 100 gal/ms | 400 qt/ms |
| 1,000 gal/ms | 4,000 qt/ms |
Reverse conversion: Quart per Millisecond to Gallon per Millisecond
4 qt/ms × 0.25 = 1 gal/ms
4 quarts per millisecond = 1 gallon per millisecond.
gallons per millisecond = quarts per millisecond × 0.25
For a page dedicated to this direction, see Quart per Millisecond to Gallon per Millisecond.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Understanding the Quart per Millisecond (qt/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quarts per millisecond are in 1 gallon per millisecond?
1 gallon per millisecond equals 4 quarts per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per millisecond to quart per millisecond?
Multiply the gallon per millisecond value by 4. The converter above does this instantly to whatever precision you set.
How do I convert quart per millisecond back to gallon per millisecond?
Use the reverse factor: 1 quart per millisecond equals 0.25 gallons per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
What is a quart per millisecond?
Quart per Millisecond (qt/ms) is a unit of flow rate.
Is the gallon per millisecond to quart per millisecond conversion exact?
Yes. Both gallon per millisecond and quart per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 4 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.