Volumetric flow rate.
Gallons per Millisecond to Cubic foot per Seconds Converter — gal/ms to ft3/s
Convert Gallon per Millisecond (gal/ms) to Cubic foot per Seconds (ft3/s) using the exact conversion factor (1 gallon per millisecond = 133.6805556 cubic foot per seconds). See the formula, worked examples, conversion table, and common uses.
Gallons per Millisecond to Cubic foot 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 3.785411784 / 0.02831684659.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallons per Millisecond to Cubic foot per Seconds
Gallon per Millisecond and Cubic foot 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
cubic foot per seconds = gallons per millisecond × 133.680555556
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per millisecond equals 3.785411784 base units, and 1 cubic foot per seconds equals 0.028316846592 base units, so dividing one by the other gives the direct gallon per millisecond-to-cubic foot per seconds factor of 133.680555556.
Simple example
1 gal/ms × 133.6805556 = 133.6805556 ft3/s
1 gallon per millisecond = 133.6805556 cubic foot per seconds.
Real-world example
60 gal/ms × 133.6805556 = 8,020.833333 ft3/s
60 gallons per millisecond = 8,020.833333 cubic foot per seconds.
Conversion table
| Gallon per Millisecond (gal/ms) | Cubic foot per Seconds (ft3/s) |
|---|---|
| 0.1 gal/ms | 13.36805556 ft3/s |
| 1 gal/ms | 133.6805556 ft3/s |
| 10 gal/ms | 1,336.805556 ft3/s |
| 60 gal/ms | 8,020.833333 ft3/s |
| 100 gal/ms | 13,368.05556 ft3/s |
| 1,000 gal/ms | 133,680.5556 ft3/s |
Reverse conversion: Cubic foot per Seconds to Gallon per Millisecond
133.6805556 ft3/s × 0.007480519481 = 1 gal/ms
133.6805556 cubic foot per seconds = 1 gallons per millisecond.
gallons per millisecond = cubic foot per seconds × 0.00748051948052
For a page dedicated to this direction, see Cubic foot per Seconds to Gallon per Millisecond.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Understanding the Cubic foot per Seconds
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Where it's used: United States
Uses of the Cubic foot per Seconds today
- The standard unit used by the US Geological Survey for reporting river and stream discharge at gauging stations
Cubic foot per Seconds — sources
- USGS Water Science School — Cubic feet per second (cfs) is the standard unit USGS uses to report streamflow.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic foot per seconds are in 1 gallon per millisecond?
1 gallon per millisecond equals 133.6805556 cubic foot per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per millisecond to cubic foot per seconds?
Multiply the gallon per millisecond value by 133.6805556. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot per seconds back to gallon per millisecond?
Use the reverse factor: 1 cubic foot per seconds equals 0.0074805195 gallons per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
What is a cubic foot per seconds?
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Is the gallon per millisecond to cubic foot per seconds conversion exact?
Yes. Both gallon per millisecond and cubic foot per seconds are defined by fixed standards rather than physical artifacts, so the factor of 133.6805556 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.