Volumetric flow rate.
Gallon per Seconds to Cubic feet per Millisecond Converter — gal/s to ft3/ms
Convert Gallon per Seconds (gal/s) to Cubic foot per Millisecond (ft3/ms) using the exact conversion factor (1 gallon per seconds = 0.0001336806 cubic foot per millisecond). See the formula, worked examples, and conversion table.
Gallon per Seconds to Cubic feet 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 / 28.31684659.
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 feet per Millisecond
Gallon per Seconds and Cubic foot 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 feet per millisecond = gallon per seconds × 0.000133680555556
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 foot per millisecond equals 28.316846592 base units, so dividing one by the other gives the direct gallon per seconds-to-cubic foot per millisecond factor of 0.000133680555556.
Simple example
1 gal/s × 0.0001336805556 = 0.0001336806 ft3/ms
1 gallon per seconds = 0.0001336806 cubic feet per millisecond.
Real-world example
60 gal/s × 0.0001336805556 = 0.0080208333 ft3/ms
60 gallon per seconds = 0.0080208333 cubic feet per millisecond.
Conversion table
| Gallon per Seconds (gal/s) | Cubic foot per Millisecond (ft3/ms) |
|---|---|
| 0.1 gal/s | 0.0000133681 ft3/ms |
| 1 gal/s | 0.0001336806 ft3/ms |
| 10 gal/s | 0.0013368056 ft3/ms |
| 60 gal/s | 0.0080208333 ft3/ms |
| 100 gal/s | 0.0133680556 ft3/ms |
| 1,000 gal/s | 0.1336805556 ft3/ms |
Reverse conversion: Cubic foot per Millisecond to Gallon per Seconds
0.0001336806 ft3/ms × 7480.519481 = 1.000000332 gal/s
0.0001336806 cubic feet per millisecond = 1.000000332 gallon per seconds.
gallon per seconds = cubic feet per millisecond × 7480.51948052
For a page dedicated to this direction, see Cubic foot per Millisecond to Gallon per Seconds.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Understanding the Cubic foot per Millisecond (ft3/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic feet per millisecond are in 1 gallon per seconds?
1 gallon per seconds equals 0.0001336806 cubic feet per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per seconds to cubic foot per millisecond?
Multiply the gallon per seconds value by 0.0001336805556. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot per millisecond back to gallon per seconds?
Use the reverse factor: 1 cubic foot per millisecond equals 7,480.519481 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 foot per millisecond?
Cubic foot per Millisecond (ft3/ms) is a unit of flow rate.
Is the gallon per seconds to cubic foot per millisecond conversion exact?
Yes. Both gallon per seconds and cubic foot per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.0001336805556 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.