Volumetric flow rate.
Imperial gallons per Millisecond to Gallon per Seconds Converter — imp gal/ms to gal/s
Convert Imperial gallon per Millisecond (imp gal/ms) to Gallon per Seconds (gal/s) using the exact conversion factor (1 imperial gallon per millisecond = 1,200.949926 gallon per seconds). See the formula, worked examples, and conversion table.
Imperial gallons per Millisecond to 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 4.54609 / 0.003785411784.
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 Seconds
Imperial gallon per Millisecond and 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
gallon per seconds = imperial gallons per millisecond × 1200.9499255
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 seconds equals 0.003785411784 base units, so dividing one by the other gives the direct imperial gallon per millisecond-to-gallon per seconds factor of 1200.9499255.
Simple example
1 imp gal/ms × 1200.949926 = 1,200.949926 gal/s
1 imperial gallon per millisecond = 1,200.949926 gallon per seconds.
Real-world example
60 imp gal/ms × 1200.949926 = 72,056.99553 gal/s
60 imperial gallons per millisecond = 72,056.99553 gallon per seconds.
Conversion table
| Imperial gallon per Millisecond (imp gal/ms) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 imp gal/ms | 120.0949926 gal/s |
| 1 imp gal/ms | 1,200.949926 gal/s |
| 10 imp gal/ms | 12,009.49926 gal/s |
| 60 imp gal/ms | 72,056.99553 gal/s |
| 100 imp gal/ms | 120,094.9926 gal/s |
| 1,000 imp gal/ms | 1,200,949.926 gal/s |
Reverse conversion: Gallon per Seconds to Imperial gallon per Millisecond
1 gal/s × 0.0008326741846 = 0.0008326742 imp gal/ms
1 gallon per seconds = 0.0008326742 imperial gallons per millisecond.
imperial gallons per millisecond = gallon per seconds × 0.000832674184629
For a page dedicated to this direction, see Gallon per Seconds to Imperial gallon per Millisecond.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per seconds are in 1 imperial gallon per millisecond?
1 imperial gallon per millisecond equals 1,200.949926 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per millisecond to gallon per seconds?
Multiply the imperial gallon per millisecond value by 1200.949926. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to imperial gallon per millisecond?
Use the reverse factor: 1 gallon per seconds equals 0.0008326742 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 seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the imperial gallon per millisecond to gallon per seconds conversion exact?
Yes. Both imperial gallon per millisecond and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 1200.949926 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.