Volumetric flow rate.
Cubic Millimeters per Millisecond to Gallon per Seconds Converter — mm3/ms to gal/s
Convert Cubic Millimeter per Millisecond (mm3/ms) to Gallon per Seconds (gal/s) using the exact conversion factor (1 cubic millimeter per millisecond = 0.0002641721 gallon per seconds). See the formula, worked examples, and conversion table.
Cubic Millimeters per Millisecond to 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 1e-6 / 0.003785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Millimeters per Millisecond to Gallon per Seconds
Cubic Millimeter per Millisecond and 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
gallon per seconds = cubic millimeters per millisecond × 0.000264172052358
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic millimeter per millisecond equals 0.000001 base units, and 1 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct cubic millimeter per millisecond-to-gallon per seconds factor of 0.000264172052358.
Simple example
1 mm3/ms × 0.0002641720524 = 0.0002641721 gal/s
1 cubic millimeter per millisecond = 0.0002641721 gallon per seconds.
Real-world example
60 mm3/ms × 0.0002641720524 = 0.0158503231 gal/s
60 cubic millimeters per millisecond = 0.0158503231 gallon per seconds.
Conversion table
| Cubic Millimeter per Millisecond (mm3/ms) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 mm3/ms | 0.0000264172 gal/s |
| 1 mm3/ms | 0.0002641721 gal/s |
| 10 mm3/ms | 0.0026417205 gal/s |
| 60 mm3/ms | 0.0158503231 gal/s |
| 100 mm3/ms | 0.0264172052 gal/s |
| 1,000 mm3/ms | 0.2641720524 gal/s |
Reverse conversion: Gallon per Seconds to Cubic Millimeter per Millisecond
0.0002641721 gal/s × 3785.411784 = 1.00000018 mm3/ms
0.0002641721 gallon per seconds = 1.00000018 cubic millimeters per millisecond.
cubic millimeters per millisecond = gallon per seconds × 3785.411784
For a page dedicated to this direction, see Gallon per Seconds to Cubic Millimeter per Millisecond.
Understanding the Cubic Millimeter per Millisecond (mm3/ms)
Volumetric flow rate.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per seconds are in 1 cubic millimeter per millisecond?
1 cubic millimeter per millisecond equals 0.0002641721 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic millimeter per millisecond to gallon per seconds?
Multiply the cubic millimeter per millisecond value by 0.0002641720524. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to cubic millimeter per millisecond?
Use the reverse factor: 1 gallon per seconds equals 3,785.411784 cubic millimeters per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic millimeter per millisecond?
Cubic Millimeter per Millisecond (mm3/ms) is a unit of flow rate.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the cubic millimeter per millisecond to gallon per seconds conversion exact?
Yes. Both cubic millimeter per millisecond and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.0002641720524 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.