Volumetric flow rate.
Cubic Millimeter per Seconds to Gallons per Millisecond Converter — mm3/s to gal/ms
Convert Cubic Millimeter per Seconds (mm3/s) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 cubic millimeter per seconds = 2.641721e-10 gallon per millisecond). See the formula, worked examples, and conversion table.
Cubic Millimeter per Seconds to 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 1e-9 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Millimeter per Seconds to Gallons per Millisecond
Cubic Millimeter per Seconds and 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
gallons per millisecond = cubic millimeter per seconds × 2.641721e-10
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic millimeter per seconds equals 1e-9 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct cubic millimeter per seconds-to-gallon per millisecond factor of 2.641721e-10.
Simple example
1 mm3/s × 2.641721e-10 = 2.641721e-10 gal/ms
1 cubic millimeter per seconds = 2.641721e-10 gallons per millisecond.
Real-world example
60 mm3/s × 2.641721e-10 = 1.585032e-8 gal/ms
60 cubic millimeter per seconds = 1.585032e-8 gallons per millisecond.
Conversion table
| Cubic Millimeter per Seconds (mm3/s) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 mm3/s | 2.641721e-11 gal/ms |
| 1 mm3/s | 2.641721e-10 gal/ms |
| 10 mm3/s | 2.641721e-9 gal/ms |
| 60 mm3/s | 1.585032e-8 gal/ms |
| 100 mm3/s | 2.641721e-8 gal/ms |
| 1,000 mm3/s | 2.641721e-7 gal/ms |
Reverse conversion: Gallon per Millisecond to Cubic Millimeter per Seconds
2.641721e-10 gal/ms × 3785411784 = 1.00000018 mm3/s
2.641721e-10 gallons per millisecond = 1.00000018 cubic millimeter per seconds.
cubic millimeter per seconds = gallons per millisecond × 3785411784
For a page dedicated to this direction, see Gallon per Millisecond to Cubic Millimeter per Seconds.
Understanding the Cubic Millimeter per Seconds (mm3/s)
Volumetric flow rate.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per millisecond are in 1 cubic millimeter per seconds?
1 cubic millimeter per seconds equals 2.641721e-10 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cubic millimeter per seconds to gallon per millisecond?
Multiply the cubic millimeter per seconds value by 2.641721e-10. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to cubic millimeter per seconds?
Use the reverse factor: 1 gallon per millisecond equals 3,785,411,784 cubic millimeter per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic millimeter per seconds?
Cubic Millimeter per Seconds (mm3/s) is a unit of flow rate.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
Is the cubic millimeter per seconds to gallon per millisecond conversion exact?
Yes. Both cubic millimeter per seconds and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 2.641721e-10 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.