Volumetric flow rate.
Gallon per Seconds to Cubic Meters per Millisecond Converter — gal/s to m3/ms
Convert Gallon per Seconds (gal/s) to Cubic Meter per Millisecond (m3/ms) using the exact conversion factor (1 gallon per seconds = 0.0000037854 cubic meter per millisecond). See the formula, worked examples, and conversion table.
Gallon per Seconds to Cubic Meters 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 0.003785411784 / 1000.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Seconds to Cubic Meters per Millisecond
Gallon per Seconds and Cubic Meter 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 meters per millisecond = gallon per seconds × 0.000003785411784
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per seconds equals 0.003785411784 base units, and 1 cubic meter per millisecond equals 1000 base units, so dividing one by the other gives the direct gallon per seconds-to-cubic meter per millisecond factor of 0.000003785411784.
Simple example
1 gal/s × 0.000003785411784 = 0.0000037854 m3/ms
1 gallon per seconds = 0.0000037854 cubic meters per millisecond.
Real-world example
60 gal/s × 0.000003785411784 = 0.0002271247 m3/ms
60 gallon per seconds = 0.0002271247 cubic meters per millisecond.
Conversion table
| Gallon per Seconds (gal/s) | Cubic Meter per Millisecond (m3/ms) |
|---|---|
| 0.1 gal/s | 3.785412e-7 m3/ms |
| 1 gal/s | 0.0000037854 m3/ms |
| 10 gal/s | 0.0000378541 m3/ms |
| 60 gal/s | 0.0002271247 m3/ms |
| 100 gal/s | 0.0003785412 m3/ms |
| 1,000 gal/s | 0.0037854118 m3/ms |
Reverse conversion: Cubic Meter per Millisecond to Gallon per Seconds
0.0000037854 m3/ms × 264172.0524 = 0.999996887 gal/s
0.0000037854 cubic meters per millisecond = 0.999996887 gallon per seconds.
gallon per seconds = cubic meters per millisecond × 264172.052358
For a page dedicated to this direction, see Cubic Meter per Millisecond to Gallon per Seconds.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Understanding the Cubic Meter per Millisecond (m3/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic meters per millisecond are in 1 gallon per seconds?
1 gallon per seconds equals 0.0000037854 cubic meters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per seconds to cubic meter per millisecond?
Multiply the gallon per seconds value by 0.000003785411784. The converter above does this instantly to whatever precision you set.
How do I convert cubic meter per millisecond back to gallon per seconds?
Use the reverse factor: 1 cubic meter per millisecond equals 264,172.0524 gallon per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
What is a cubic meter per millisecond?
Cubic Meter per Millisecond (m3/ms) is a unit of flow rate.
Is the gallon per seconds to cubic meter per millisecond conversion exact?
Yes. Both gallon per seconds and cubic meter per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.000003785411784 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.