Volumetric flow rate.
Cubic inch per Seconds to Imperial gallons per Millisecond Converter — in3/s to imp gal/ms
Convert Cubic inch per Seconds (in3/s) to Imperial gallon per Millisecond (imp gal/ms) using the exact conversion factor (1 cubic inch per seconds = 0.0000036047 imperial gallon per millisecond). See the formula, worked examples, and conversion table.
Cubic inch per Seconds to Imperial gallons 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 1.6387064e-5 / 4.54609.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic inch per Seconds to Imperial gallons per Millisecond
Cubic inch per Seconds and Imperial gallon 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
imperial gallons per millisecond = cubic inch per seconds × 0.00000360465014991
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic inch per seconds equals 0.000016387064 base units, and 1 imperial gallon per millisecond equals 4.54609 base units, so dividing one by the other gives the direct cubic inch per seconds-to-imperial gallon per millisecond factor of 0.00000360465014991.
Simple example
1 in3/s × 0.00000360465015 = 0.0000036047 imp gal/ms
1 cubic inch per seconds = 0.0000036047 imperial gallons per millisecond.
Real-world example
60 in3/s × 0.00000360465015 = 0.000216279 imp gal/ms
60 cubic inch per seconds = 0.000216279 imperial gallons per millisecond.
Conversion table
| Cubic inch per Seconds (in3/s) | Imperial gallon per Millisecond (imp gal/ms) |
|---|---|
| 0.1 in3/s | 3.60465e-7 imp gal/ms |
| 1 in3/s | 0.0000036047 imp gal/ms |
| 10 in3/s | 0.0000360465 imp gal/ms |
| 60 in3/s | 0.000216279 imp gal/ms |
| 100 in3/s | 0.000360465 imp gal/ms |
| 1,000 in3/s | 0.0036046502 imp gal/ms |
Reverse conversion: Imperial gallon per Millisecond to Cubic inch per Seconds
0.0000036047 imp gal/ms × 277419.4328 = 1.000013829 in3/s
0.0000036047 imperial gallons per millisecond = 1.000013829 cubic inch per seconds.
cubic inch per seconds = imperial gallons per millisecond × 277419.432792
For a page dedicated to this direction, see Imperial gallon per Millisecond to Cubic inch per Seconds.
Understanding the Cubic inch per Seconds (in3/s)
Volumetric flow rate.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallons per millisecond are in 1 cubic inch per seconds?
1 cubic inch per seconds equals 0.0000036047 imperial gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cubic inch per seconds to imperial gallon per millisecond?
Multiply the cubic inch per seconds value by 0.00000360465015. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per millisecond back to cubic inch per seconds?
Use the reverse factor: 1 imperial gallon per millisecond equals 277,419.4328 cubic inch per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic inch per seconds?
Cubic inch per Seconds (in3/s) is a unit of flow rate.
What is a imperial gallon per millisecond?
Imperial gallon per Millisecond (imp gal/ms) is a unit of flow rate.
Is the cubic inch per seconds to imperial gallon per millisecond conversion exact?
Yes. Both cubic inch per seconds and imperial gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.00000360465015 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.