Volumetric flow rate.
Quarts per Millisecond to Imperial gallons per Millisecond Converter — qt/ms to imp gal/ms
Convert Quart per Millisecond (qt/ms) to Imperial gallon per Millisecond (imp gal/ms) using the exact conversion factor (1 quart per millisecond = 0.2081685462 imperial gallon per millisecond). See the formula, worked examples, and conversion table.
Quarts per Millisecond to Imperial 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 0.946352946 / 4.54609.
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 Imperial gallons per Millisecond
Quart per Millisecond and Imperial 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
imperial gallons per millisecond = quarts per millisecond × 0.208168546157
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 imperial gallon per millisecond equals 4.54609 base units, so dividing one by the other gives the direct quart per millisecond-to-imperial gallon per millisecond factor of 0.208168546157.
Simple example
1 qt/ms × 0.2081685462 = 0.2081685462 imp gal/ms
1 quart per millisecond = 0.2081685462 imperial gallons per millisecond.
Real-world example
60 qt/ms × 0.2081685462 = 12.49011277 imp gal/ms
60 quarts per millisecond = 12.49011277 imperial gallons per millisecond.
Conversion table
| Quart per Millisecond (qt/ms) | Imperial gallon per Millisecond (imp gal/ms) |
|---|---|
| 0.1 qt/ms | 0.0208168546 imp gal/ms |
| 1 qt/ms | 0.2081685462 imp gal/ms |
| 10 qt/ms | 2.081685462 imp gal/ms |
| 60 qt/ms | 12.49011277 imp gal/ms |
| 100 qt/ms | 20.81685462 imp gal/ms |
| 1,000 qt/ms | 208.1685462 imp gal/ms |
Reverse conversion: Imperial gallon per Millisecond to Quart per Millisecond
0.2081685462 imp gal/ms × 4.803799702 = 1 qt/ms
0.2081685462 imperial gallons per millisecond = 1 quarts per millisecond.
quarts per millisecond = imperial gallons per millisecond × 4.80379970202
For a page dedicated to this direction, see Imperial gallon per Millisecond to Quart per Millisecond.
Understanding the Quart per Millisecond (qt/ms)
Volumetric flow rate.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallons per millisecond are in 1 quart per millisecond?
1 quart per millisecond equals 0.2081685462 imperial gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert quart per millisecond to imperial gallon per millisecond?
Multiply the quart per millisecond value by 0.2081685462. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per millisecond back to quart per millisecond?
Use the reverse factor: 1 imperial gallon per millisecond equals 4.803799702 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 imperial gallon per millisecond?
Imperial gallon per Millisecond (imp gal/ms) is a unit of flow rate.
Is the quart per millisecond to imperial gallon per millisecond conversion exact?
Yes. Both quart per millisecond and imperial gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.2081685462 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.