Volumetric flow rate.
Gallons per Millisecond to Gallon per Seconds Converter — gal/ms to gal/s
Convert Gallon per Millisecond (gal/ms) to Gallon per Seconds (gal/s) using the exact conversion factor (1 gallon per millisecond = 1,000 gallon per seconds). See the formula, worked examples, and conversion table.
Gallons 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 3.785411784 / 0.003785411784.
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 Gallon per Seconds
Gallon 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 = gallons per millisecond × 1000
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 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct gallon per millisecond-to-gallon per seconds factor of 1000.
Simple example
1 gal/ms × 1000 = 1,000 gal/s
1 gallon per millisecond = 1,000 gallon per seconds.
Real-world example
60 gal/ms × 1000 = 60,000 gal/s
60 gallons per millisecond = 60,000 gallon per seconds.
Conversion table
| Gallon per Millisecond (gal/ms) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 gal/ms | 100 gal/s |
| 1 gal/ms | 1,000 gal/s |
| 10 gal/ms | 10,000 gal/s |
| 60 gal/ms | 60,000 gal/s |
| 100 gal/ms | 100,000 gal/s |
| 1,000 gal/ms | 1,000,000 gal/s |
Reverse conversion: Gallon per Seconds to Gallon per Millisecond
1 gal/s × 0.001 = 0.001 gal/ms
1 gallon per seconds = 0.001 gallons per millisecond.
gallons per millisecond = gallon per seconds × 0.001
For a page dedicated to this direction, see Gallon per Seconds to Gallon per Millisecond.
Understanding the Gallon per Millisecond (gal/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 gallon per millisecond?
1 gallon per millisecond equals 1,000 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per millisecond to gallon per seconds?
Multiply the gallon per millisecond value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to gallon per millisecond?
Use the reverse factor: 1 gallon per seconds equals 0.001 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 gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the gallon per millisecond to gallon per seconds conversion exact?
Yes. Both gallon per millisecond and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 1000 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.