Volumetric flow rate.
Hectoliters per Millisecond to Gallon per Minutes Converter — hL/ms to gal/min
Convert Hectoliter per Millisecond (hL/ms) to Gallon per Minutes (gal/min) using the exact conversion factor (1 hectoliter per millisecond = 1,585,032.314 gallon per minutes). See the formula, worked examples, conversion table, and common uses.
Hectoliters per Millisecond to Gallon per Minutes 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 100 / 6.30901964e-5.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectoliters per Millisecond to Gallon per Minutes
Hectoliter per Millisecond and Gallon per Minutes 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 minutes = hectoliters per millisecond × 1585032.31415
This factor comes from each unit's defined relationship to the category's base unit: 1 hectoliter per millisecond equals 100 base units, and 1 gallon per minutes equals 0.0000630901964 base units, so dividing one by the other gives the direct hectoliter per millisecond-to-gallon per minutes factor of 1585032.31415.
Simple example
1 hL/ms × 1585032.314 = 1,585,032.314 gal/min
1 hectoliter per millisecond = 1,585,032.314 gallon per minutes.
Real-world example
60 hL/ms × 1585032.314 = 95,101,938.85 gal/min
60 hectoliters per millisecond = 95,101,938.85 gallon per minutes.
Conversion table
| Hectoliter per Millisecond (hL/ms) | Gallon per Minutes (gal/min) |
|---|---|
| 0.1 hL/ms | 158,503.2314 gal/min |
| 1 hL/ms | 1,585,032.314 gal/min |
| 10 hL/ms | 15,850,323.14 gal/min |
| 60 hL/ms | 95,101,938.85 gal/min |
| 100 hL/ms | 158,503,231.4 gal/min |
| 1,000 hL/ms | 1,585,032,314 gal/min |
Reverse conversion: Gallon per Minutes to Hectoliter per Millisecond
1 gal/min × 6.30902e-7 = 6.30902e-7 hL/ms
1 gallon per minutes = 6.30902e-7 hectoliters per millisecond.
hectoliters per millisecond = gallon per minutes × 6.30902e-7
For a page dedicated to this direction, see Gallon per Minutes to Hectoliter per Millisecond.
Understanding the Hectoliter per Millisecond (hL/ms)
Volumetric flow rate.
Understanding the Gallon per Minutes
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
Where it's used: United States (plumbing, pump, and irrigation industry standard)
Uses of the Gallon per Minutes today
- US residential and commercial plumbing fixture flow ratings
- US pump and irrigation system specifications
- US pool and spa filtration system sizing
Gallon per Minutes — sources
- NIST Handbook 44 — General tables of units including US customary flow-rate measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per minutes are in 1 hectoliter per millisecond?
1 hectoliter per millisecond equals 1,585,032.314 gallon per minutes, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter per millisecond to gallon per minutes?
Multiply the hectoliter per millisecond value by 1585032.314. The converter above does this instantly to whatever precision you set.
How do I convert gallon per minutes back to hectoliter per millisecond?
Use the reverse factor: 1 gallon per minutes equals 6.30902e-7 hectoliters per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectoliter per millisecond?
Hectoliter per Millisecond (hL/ms) is a unit of flow rate.
What is a gallon per minutes?
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
Is the hectoliter per millisecond to gallon per minutes conversion exact?
Yes. Both hectoliter per millisecond and gallon per minutes are defined by fixed standards rather than physical artifacts, so the factor of 1585032.314 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.