Volumetric flow rate.
Imperial gallons per Millisecond to Liter per Seconds Converter — imp gal/ms to L/s
Convert Imperial gallon per Millisecond (imp gal/ms) to Liter per Seconds (L/s) using the exact conversion factor (1 imperial gallon per millisecond = 4,546.09 liter per seconds). See the formula, worked examples, conversion table, and common uses.
Imperial gallons per Millisecond to Liter 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 / 0.001.
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 Liter per Seconds
Imperial gallon per Millisecond and Liter 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
liter per seconds = imperial gallons per millisecond × 4546.09
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 liter per seconds equals 0.001 base units, so dividing one by the other gives the direct imperial gallon per millisecond-to-liter per seconds factor of 4546.09.
Simple example
1 imp gal/ms × 4546.09 = 4,546.09 L/s
1 imperial gallon per millisecond = 4,546.09 liter per seconds.
Real-world example
60 imp gal/ms × 4546.09 = 272,765.4 L/s
60 imperial gallons per millisecond = 272,765.4 liter per seconds.
Conversion table
| Imperial gallon per Millisecond (imp gal/ms) | Liter per Seconds (L/s) |
|---|---|
| 0.1 imp gal/ms | 454.609 L/s |
| 1 imp gal/ms | 4,546.09 L/s |
| 10 imp gal/ms | 45,460.9 L/s |
| 60 imp gal/ms | 272,765.4 L/s |
| 100 imp gal/ms | 454,609 L/s |
| 1,000 imp gal/ms | 4,546,090 L/s |
Reverse conversion: Liter per Seconds to Imperial gallon per Millisecond
1 L/s × 0.0002199692483 = 0.0002199692 imp gal/ms
1 liter per seconds = 0.0002199692 imperial gallons per millisecond.
imperial gallons per millisecond = liter per seconds × 0.000219969248299
For a page dedicated to this direction, see Liter per Seconds to Imperial gallon per Millisecond.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Understanding the Liter per Seconds
Liter per Seconds (L/s) measures volumetric flow rate. One liter of volume passing a point every second — used for larger flows than liter-per-minute conveniently describes. It is classified as a metric derived flow-rate unit.
Where it's used: Common in municipal water-utility and industrial flow specifications internationally
L/s vs. L/min. Both measure the same quantity at different time scales; 1 L/s equals 60 L/min. L/s is typically used for larger, continuous industrial or utility flows, while L/min suits smaller household-scale flows.
Uses of the Liter per Seconds today
- Municipal water supply and treatment plant flow rates
- Industrial process flow specifications
- Stream and river discharge measurement at moderate scales
Liter per Seconds — sources
- BIPM SI Brochure — Litre and second as accepted units used together to express flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many liter per seconds are in 1 imperial gallon per millisecond?
1 imperial gallon per millisecond equals 4,546.09 liter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per millisecond to liter per seconds?
Multiply the imperial gallon per millisecond value by 4546.09. The converter above does this instantly to whatever precision you set.
How do I convert liter per seconds back to imperial gallon per millisecond?
Use the reverse factor: 1 liter per seconds equals 0.0002199692 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 liter per seconds?
Liter per Seconds (L/s) measures volumetric flow rate. One liter of volume passing a point every second — used for larger flows than liter-per-minute conveniently describes. It is classified as a metric derived flow-rate unit.
Is the imperial gallon per millisecond to liter per seconds conversion exact?
Yes. Both imperial gallon per millisecond and liter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 4546.09 used above is exact to as many digits as you choose to display.
What is the difference between l/s vs. l/min?
Both measure the same quantity at different time scales; 1 L/s equals 60 L/min. L/s is typically used for larger, continuous industrial or utility flows, while L/min suits smaller household-scale flows.