Volumetric flow rate.
Imperial gallon per Seconds to Quarts per Millisecond Converter — imp gal/s to qt/ms
Convert Imperial gallon per Seconds (imp gal/s) to Quart per Millisecond (qt/ms) using the exact conversion factor (1 imperial gallon per seconds = 0.0048037997 quart per millisecond). See the formula, worked examples, and conversion table.
Imperial gallon per Seconds to Quarts per Millisecond 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 0.00454609 / 0.946352946.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallon per Seconds to Quarts per Millisecond
Imperial gallon per Seconds and Quart per Millisecond 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
quarts per millisecond = imperial gallon per seconds × 0.00480379970202
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per seconds equals 0.00454609 base units, and 1 quart per millisecond equals 0.946352946 base units, so dividing one by the other gives the direct imperial gallon per seconds-to-quart per millisecond factor of 0.00480379970202.
Simple example
1 imp gal/s × 0.004803799702 = 0.0048037997 qt/ms
1 imperial gallon per seconds = 0.0048037997 quarts per millisecond.
Real-world example
60 imp gal/s × 0.004803799702 = 0.2882279821 qt/ms
60 imperial gallon per seconds = 0.2882279821 quarts per millisecond.
Conversion table
| Imperial gallon per Seconds (imp gal/s) | Quart per Millisecond (qt/ms) |
|---|---|
| 0.1 imp gal/s | 0.00048038 qt/ms |
| 1 imp gal/s | 0.0048037997 qt/ms |
| 10 imp gal/s | 0.048037997 qt/ms |
| 60 imp gal/s | 0.2882279821 qt/ms |
| 100 imp gal/s | 0.4803799702 qt/ms |
| 1,000 imp gal/s | 4.803799702 qt/ms |
Reverse conversion: Quart per Millisecond to Imperial gallon per Seconds
0.0048037997 qt/ms × 208.1685462 = 0.9999999996 imp gal/s
0.0048037997 quarts per millisecond = 0.9999999996 imperial gallon per seconds.
imperial gallon per seconds = quarts per millisecond × 208.168546157
For a page dedicated to this direction, see Quart per Millisecond to Imperial gallon per Seconds.
Understanding the Imperial gallon per Seconds (imp gal/s)
Volumetric flow rate.
Understanding the Quart per Millisecond (qt/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quarts per millisecond are in 1 imperial gallon per seconds?
1 imperial gallon per seconds equals 0.0048037997 quarts per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per seconds to quart per millisecond?
Multiply the imperial gallon per seconds value by 0.004803799702. The converter above does this instantly to whatever precision you set.
How do I convert quart per millisecond back to imperial gallon per seconds?
Use the reverse factor: 1 quart per millisecond equals 208.1685462 imperial gallon per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per seconds?
Imperial gallon per Seconds (imp gal/s) is a unit of flow rate.
What is a quart per millisecond?
Quart per Millisecond (qt/ms) is a unit of flow rate.
Is the imperial gallon per seconds to quart per millisecond conversion exact?
Yes. Both imperial gallon per seconds and quart per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.004803799702 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.