Volumetric flow rate.
Imperial gallon per Seconds to Cubic Millimeters per Millisecond Converter — imp gal/s to mm3/ms
Convert Imperial gallon per Seconds (imp gal/s) to Cubic Millimeter per Millisecond (mm3/ms) using the exact conversion factor (1 imperial gallon per seconds = 4,546.09 cubic millimeter per millisecond). See the formula, worked examples, and conversion table.
Imperial gallon per Seconds to Cubic Millimeters 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 / 1e-6.
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 Cubic Millimeters per Millisecond
Imperial gallon per Seconds and Cubic Millimeter 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
cubic millimeters per millisecond = imperial gallon per seconds × 4546.09
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 cubic millimeter per millisecond equals 0.000001 base units, so dividing one by the other gives the direct imperial gallon per seconds-to-cubic millimeter per millisecond factor of 4546.09.
Simple example
1 imp gal/s × 4546.09 = 4,546.09 mm3/ms
1 imperial gallon per seconds = 4,546.09 cubic millimeters per millisecond.
Real-world example
60 imp gal/s × 4546.09 = 272,765.4 mm3/ms
60 imperial gallon per seconds = 272,765.4 cubic millimeters per millisecond.
Conversion table
| Imperial gallon per Seconds (imp gal/s) | Cubic Millimeter per Millisecond (mm3/ms) |
|---|---|
| 0.1 imp gal/s | 454.609 mm3/ms |
| 1 imp gal/s | 4,546.09 mm3/ms |
| 10 imp gal/s | 45,460.9 mm3/ms |
| 60 imp gal/s | 272,765.4 mm3/ms |
| 100 imp gal/s | 454,609 mm3/ms |
| 1,000 imp gal/s | 4,546,090 mm3/ms |
Reverse conversion: Cubic Millimeter per Millisecond to Imperial gallon per Seconds
1 mm3/ms × 0.0002199692483 = 0.0002199692 imp gal/s
1 cubic millimeter per millisecond = 0.0002199692 imperial gallon per seconds.
imperial gallon per seconds = cubic millimeters per millisecond × 0.000219969248299
For a page dedicated to this direction, see Cubic Millimeter per Millisecond to Imperial gallon per Seconds.
Understanding the Imperial gallon per Seconds (imp gal/s)
Volumetric flow rate.
Understanding the Cubic Millimeter per Millisecond (mm3/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic millimeters per millisecond are in 1 imperial gallon per seconds?
1 imperial gallon per seconds equals 4,546.09 cubic millimeters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per seconds to cubic millimeter per millisecond?
Multiply the imperial gallon per seconds value by 4546.09. The converter above does this instantly to whatever precision you set.
How do I convert cubic millimeter per millisecond back to imperial gallon per seconds?
Use the reverse factor: 1 cubic millimeter per millisecond equals 0.0002199692 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 cubic millimeter per millisecond?
Cubic Millimeter per Millisecond (mm3/ms) is a unit of flow rate.
Is the imperial gallon per seconds to cubic millimeter per millisecond conversion exact?
Yes. Both imperial gallon per seconds and cubic millimeter per millisecond 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'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.
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