Volumetric flow rate.
Gallons per Millisecond to Imperial gallon per Seconds Converter — gal/ms to imp gal/s
Convert Gallon per Millisecond (gal/ms) to Imperial gallon per Seconds (imp gal/s) using the exact conversion factor (1 gallon per millisecond = 832.6741846 imperial gallon per seconds). See the formula, worked examples, and conversion table.
Gallons per Millisecond to Imperial gallon per Seconds 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 / 0.00454609.
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 Imperial gallon per Seconds
Gallon per Millisecond and Imperial gallon per Seconds 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 gallon per seconds = gallons per millisecond × 832.674184629
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 imperial gallon per seconds equals 0.00454609 base units, so dividing one by the other gives the direct gallon per millisecond-to-imperial gallon per seconds factor of 832.674184629.
Simple example
1 gal/ms × 832.6741846 = 832.6741846 imp gal/s
1 gallon per millisecond = 832.6741846 imperial gallon per seconds.
Real-world example
60 gal/ms × 832.6741846 = 49,960.45108 imp gal/s
60 gallons per millisecond = 49,960.45108 imperial gallon per seconds.
Conversion table
| Gallon per Millisecond (gal/ms) | Imperial gallon per Seconds (imp gal/s) |
|---|---|
| 0.1 gal/ms | 83.26741846 imp gal/s |
| 1 gal/ms | 832.6741846 imp gal/s |
| 10 gal/ms | 8,326.741846 imp gal/s |
| 60 gal/ms | 49,960.45108 imp gal/s |
| 100 gal/ms | 83,267.41846 imp gal/s |
| 1,000 gal/ms | 832,674.1846 imp gal/s |
Reverse conversion: Imperial gallon per Seconds to Gallon per Millisecond
832.6741846 imp gal/s × 0.001200949926 = 1 gal/ms
832.6741846 imperial gallon per seconds = 1 gallons per millisecond.
gallons per millisecond = imperial gallon per seconds × 0.0012009499255
For a page dedicated to this direction, see Imperial gallon per Seconds to Gallon per Millisecond.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Understanding the Imperial gallon per Seconds (imp gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallon per seconds are in 1 gallon per millisecond?
1 gallon per millisecond equals 832.6741846 imperial gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per millisecond to imperial gallon per seconds?
Multiply the gallon per millisecond value by 832.6741846. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per seconds back to gallon per millisecond?
Use the reverse factor: 1 imperial gallon per seconds equals 0.0012009499 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 imperial gallon per seconds?
Imperial gallon per Seconds (imp gal/s) is a unit of flow rate.
Is the gallon per millisecond to imperial gallon per seconds conversion exact?
Yes. Both gallon per millisecond and imperial gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 832.6741846 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.