Volumetric flow rate.
Imperial gallon per Hours to Quarts per Millisecond Converter — imp gal/h to qt/ms
Convert Imperial gallon per Hours (imp gal/h) to Quart per Millisecond (qt/ms) using the exact conversion factor (1 imperial gallon per hours = 0.0000013344 quart per millisecond). See the formula, worked examples, and conversion table.
Imperial gallon per Hours 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 1.26280278e-6 / 0.946352946.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallon per Hours to Quarts per Millisecond
Imperial gallon per Hours 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 = imperial gallon per hours × 0.00000133438880612
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per hours equals 0.00000126280277778 base units, and 1 quart per millisecond equals 0.946352946 base units, so dividing one by the other gives the direct imperial gallon per hours-to-quart per millisecond factor of 0.00000133438880612.
Simple example
1 imp gal/h × 0.000001334388806 = 0.0000013344 qt/ms
1 imperial gallon per hours = 0.0000013344 quarts per millisecond.
Real-world example
60 imp gal/h × 0.000001334388806 = 0.0000800633 qt/ms
60 imperial gallon per hours = 0.0000800633 quarts per millisecond.
Conversion table
| Imperial gallon per Hours (imp gal/h) | Quart per Millisecond (qt/ms) |
|---|---|
| 0.1 imp gal/h | 1.334389e-7 qt/ms |
| 1 imp gal/h | 0.0000013344 qt/ms |
| 10 imp gal/h | 0.0000133439 qt/ms |
| 60 imp gal/h | 0.0000800633 qt/ms |
| 100 imp gal/h | 0.0001334389 qt/ms |
| 1,000 imp gal/h | 0.0013343888 qt/ms |
Reverse conversion: Quart per Millisecond to Imperial gallon per Hours
0.0000013344 qt/ms × 749406.7662 = 1.000008389 imp gal/h
0.0000013344 quarts per millisecond = 1.000008389 imperial gallon per hours.
imperial gallon per hours = quarts per millisecond × 749406.766166
For a page dedicated to this direction, see Quart per Millisecond to Imperial gallon per Hours.
Understanding the Imperial gallon per Hours (imp gal/h)
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 imperial gallon per hours?
1 imperial gallon per hours equals 0.0000013344 quarts per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per hours to quart per millisecond?
Multiply the imperial gallon per hours value by 0.000001334388806. The converter above does this instantly to whatever precision you set.
How do I convert quart per millisecond back to imperial gallon per hours?
Use the reverse factor: 1 quart per millisecond equals 749,406.7662 imperial gallon per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per hours?
Imperial gallon per Hours (imp gal/h) 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 imperial gallon per hours to quart per millisecond conversion exact?
Yes. Both imperial gallon per hours and quart per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.000001334388806 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.