Volumetric flow rate.
Imperial quart per Hours to Imperial gallons per Millisecond Converter — imp qt/h to imp gal/ms
Convert Imperial quart per Hours (imp qt/h) to Imperial gallon per Millisecond (imp gal/ms) using the exact conversion factor (1 imperial quart per hours = 6.944444e-8 imperial gallon per millisecond). See the formula, worked examples, and conversion table.
Imperial quart per Hours 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 3.15700694e-7 / 4.54609.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial quart per Hours to Imperial gallons per Millisecond
Imperial quart per Hours 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 = imperial quart per hours × 6.944444e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial quart per hours equals 3.157007e-7 base units, and 1 imperial gallon per millisecond equals 4.54609 base units, so dividing one by the other gives the direct imperial quart per hours-to-imperial gallon per millisecond factor of 6.944444e-8.
Simple example
1 imp qt/h × 6.944444e-8 = 6.944444e-8 imp gal/ms
1 imperial quart per hours = 6.944444e-8 imperial gallons per millisecond.
Real-world example
60 imp qt/h × 6.944444e-8 = 0.0000041667 imp gal/ms
60 imperial quart per hours = 0.0000041667 imperial gallons per millisecond.
Conversion table
| Imperial quart per Hours (imp qt/h) | Imperial gallon per Millisecond (imp gal/ms) |
|---|---|
| 0.1 imp qt/h | 6.944444e-9 imp gal/ms |
| 1 imp qt/h | 6.944444e-8 imp gal/ms |
| 10 imp qt/h | 6.944444e-7 imp gal/ms |
| 60 imp qt/h | 0.0000041667 imp gal/ms |
| 100 imp qt/h | 0.0000069444 imp gal/ms |
| 1,000 imp qt/h | 0.0000694444 imp gal/ms |
Reverse conversion: Imperial gallon per Millisecond to Imperial quart per Hours
6.944444e-8 imp gal/ms × 14400000 = 0.999999936 imp qt/h
6.944444e-8 imperial gallons per millisecond = 0.999999936 imperial quart per hours.
imperial quart per hours = imperial gallons per millisecond × 14400000
For a page dedicated to this direction, see Imperial gallon per Millisecond to Imperial quart per Hours.
Understanding the Imperial quart per Hours (imp qt/h)
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 imperial quart per hours?
1 imperial quart per hours equals 6.944444e-8 imperial gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert imperial quart per hours to imperial gallon per millisecond?
Multiply the imperial quart per hours value by 6.944444e-8. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per millisecond back to imperial quart per hours?
Use the reverse factor: 1 imperial gallon per millisecond equals 14,400,000 imperial quart per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial quart per hours?
Imperial quart per Hours (imp qt/h) 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 imperial quart per hours to imperial gallon per millisecond conversion exact?
Yes. Both imperial quart per hours and imperial gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 6.944444e-8 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.