Volumetric flow rate.
Imperial quarts per Millisecond to Imperial gallon per Seconds Converter — imp qt/ms to imp gal/s
Convert Imperial quart per Millisecond (imp qt/ms) to Imperial gallon per Seconds (imp gal/s) using the exact conversion factor (1 imperial quart per millisecond = 250 imperial gallon per seconds). See the formula, worked examples, and conversion table.
Imperial quarts 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 1.1365225 / 0.00454609.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial quarts per Millisecond to Imperial gallon per Seconds
Imperial quart 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 = imperial quarts per millisecond × 250
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial quart per millisecond equals 1.1365225 base units, and 1 imperial gallon per seconds equals 0.00454609 base units, so dividing one by the other gives the direct imperial quart per millisecond-to-imperial gallon per seconds factor of 250.
Simple example
1 imp qt/ms × 250 = 250 imp gal/s
1 imperial quart per millisecond = 250 imperial gallon per seconds.
Real-world example
60 imp qt/ms × 250 = 15,000 imp gal/s
60 imperial quarts per millisecond = 15,000 imperial gallon per seconds.
Conversion table
| Imperial quart per Millisecond (imp qt/ms) | Imperial gallon per Seconds (imp gal/s) |
|---|---|
| 0.1 imp qt/ms | 25 imp gal/s |
| 1 imp qt/ms | 250 imp gal/s |
| 10 imp qt/ms | 2,500 imp gal/s |
| 60 imp qt/ms | 15,000 imp gal/s |
| 100 imp qt/ms | 25,000 imp gal/s |
| 1,000 imp qt/ms | 250,000 imp gal/s |
Reverse conversion: Imperial gallon per Seconds to Imperial quart per Millisecond
250 imp gal/s × 0.004 = 1 imp qt/ms
250 imperial gallon per seconds = 1 imperial quarts per millisecond.
imperial quarts per millisecond = imperial gallon per seconds × 0.004
For a page dedicated to this direction, see Imperial gallon per Seconds to Imperial quart per Millisecond.
Understanding the Imperial quart per Millisecond (imp qt/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 imperial quart per millisecond?
1 imperial quart per millisecond equals 250 imperial gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert imperial quart per millisecond to imperial gallon per seconds?
Multiply the imperial quart per millisecond value by 250. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per seconds back to imperial quart per millisecond?
Use the reverse factor: 1 imperial gallon per seconds equals 0.004 imperial quarts per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial quart per millisecond?
Imperial quart per Millisecond (imp qt/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 imperial quart per millisecond to imperial gallon per seconds conversion exact?
Yes. Both imperial quart per millisecond and imperial gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 250 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.