Volumetric flow rate.
Imperial gallons per Millisecond to Gallon per Hours Converter — imp gal/ms to gal/h
Convert Imperial gallon per Millisecond (imp gal/ms) to Gallon per Hours (gal/h) using the exact conversion factor (1 imperial gallon per millisecond = 4,323,419.732 gallon per hours). See the formula, worked examples, and conversion table.
Imperial gallons per Millisecond to Gallon per Hours 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 4.54609 / 1.05150327e-6.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallons per Millisecond to Gallon per Hours
Imperial gallon per Millisecond and Gallon per Hours 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 hours = imperial gallons per millisecond × 4323419.73182
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per millisecond equals 4.54609 base units, and 1 gallon per hours equals 0.00000105150327333 base units, so dividing one by the other gives the direct imperial gallon per millisecond-to-gallon per hours factor of 4323419.73182.
Simple example
1 imp gal/ms × 4323419.732 = 4,323,419.732 gal/h
1 imperial gallon per millisecond = 4,323,419.732 gallon per hours.
Real-world example
60 imp gal/ms × 4323419.732 = 259,405,183.9 gal/h
60 imperial gallons per millisecond = 259,405,183.9 gallon per hours.
Conversion table
| Imperial gallon per Millisecond (imp gal/ms) | Gallon per Hours (gal/h) |
|---|---|
| 0.1 imp gal/ms | 432,341.9732 gal/h |
| 1 imp gal/ms | 4,323,419.732 gal/h |
| 10 imp gal/ms | 43,234,197.32 gal/h |
| 60 imp gal/ms | 259,405,183.9 gal/h |
| 100 imp gal/ms | 432,341,973.2 gal/h |
| 1,000 imp gal/ms | 4,323,419,732 gal/h |
Reverse conversion: Gallon per Hours to Imperial gallon per Millisecond
1 gal/h × 2.312984e-7 = 2.312984e-7 imp gal/ms
1 gallon per hours = 2.312984e-7 imperial gallons per millisecond.
imperial gallons per millisecond = gallon per hours × 2.312984e-7
For a page dedicated to this direction, see Gallon per Hours to Imperial gallon per Millisecond.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per hours are in 1 imperial gallon per millisecond?
1 imperial gallon per millisecond equals 4,323,419.732 gallon per hours, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per millisecond to gallon per hours?
Multiply the imperial gallon per millisecond value by 4323419.732. The converter above does this instantly to whatever precision you set.
How do I convert gallon per hours back to imperial gallon per millisecond?
Use the reverse factor: 1 gallon per hours equals 2.312984e-7 imperial gallons per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per millisecond?
Imperial gallon per Millisecond (imp gal/ms) is a unit of flow rate.
What is a gallon per hours?
Gallon per Hours (gal/h) is a unit of flow rate.
Is the imperial gallon per millisecond to gallon per hours conversion exact?
Yes. Both imperial gallon per millisecond and gallon per hours are defined by fixed standards rather than physical artifacts, so the factor of 4323419.732 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.