Volumetric flow rate.
Hectoliter per Seconds to Gallons per Millisecond Converter — hL/s to gal/ms
Convert Hectoliter per Seconds (hL/s) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 hectoliter per seconds = 0.0264172052 gallon per millisecond). See the formula, worked examples, and conversion table.
Hectoliter per Seconds to Gallons 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 0.1 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectoliter per Seconds to Gallons per Millisecond
Hectoliter per Seconds and Gallon 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
gallons per millisecond = hectoliter per seconds × 0.0264172052358
This factor comes from each unit's defined relationship to the category's base unit: 1 hectoliter per seconds equals 0.1 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct hectoliter per seconds-to-gallon per millisecond factor of 0.0264172052358.
Simple example
1 hL/s × 0.02641720524 = 0.0264172052 gal/ms
1 hectoliter per seconds = 0.0264172052 gallons per millisecond.
Real-world example
60 hL/s × 0.02641720524 = 1.585032314 gal/ms
60 hectoliter per seconds = 1.585032314 gallons per millisecond.
Conversion table
| Hectoliter per Seconds (hL/s) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 hL/s | 0.0026417205 gal/ms |
| 1 hL/s | 0.0264172052 gal/ms |
| 10 hL/s | 0.2641720524 gal/ms |
| 60 hL/s | 1.585032314 gal/ms |
| 100 hL/s | 2.641720524 gal/ms |
| 1,000 hL/s | 26.41720524 gal/ms |
Reverse conversion: Gallon per Millisecond to Hectoliter per Seconds
0.0264172052 gal/ms × 37.85411784 = 0.9999999986 hL/s
0.0264172052 gallons per millisecond = 0.9999999986 hectoliter per seconds.
hectoliter per seconds = gallons per millisecond × 37.85411784
For a page dedicated to this direction, see Gallon per Millisecond to Hectoliter per Seconds.
Understanding the Hectoliter per Seconds (hL/s)
Volumetric flow rate.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per millisecond are in 1 hectoliter per seconds?
1 hectoliter per seconds equals 0.0264172052 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter per seconds to gallon per millisecond?
Multiply the hectoliter per seconds value by 0.02641720524. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to hectoliter per seconds?
Use the reverse factor: 1 gallon per millisecond equals 37.85411784 hectoliter per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectoliter per seconds?
Hectoliter per Seconds (hL/s) is a unit of flow rate.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
Is the hectoliter per seconds to gallon per millisecond conversion exact?
Yes. Both hectoliter per seconds and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.02641720524 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.