Volumetric flow rate.
Hectoliters per Millisecond to Imperial gallons per Millisecond Converter — hL/ms to imp gal/ms
Convert Hectoliter per Millisecond (hL/ms) to Imperial gallon per Millisecond (imp gal/ms) using the exact conversion factor (1 hectoliter per millisecond = 21.99692483 imperial gallon per millisecond). See the formula, worked examples, and conversion table.
Hectoliters per Millisecond to Imperial 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 100 / 4.54609.
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 Imperial gallons per Millisecond
Hectoliter per Millisecond and Imperial 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
imperial gallons per millisecond = hectoliters per millisecond × 21.9969248299
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 imperial gallon per millisecond equals 4.54609 base units, so dividing one by the other gives the direct hectoliter per millisecond-to-imperial gallon per millisecond factor of 21.9969248299.
Simple example
1 hL/ms × 21.99692483 = 21.99692483 imp gal/ms
1 hectoliter per millisecond = 21.99692483 imperial gallons per millisecond.
Real-world example
60 hL/ms × 21.99692483 = 1,319.81549 imp gal/ms
60 hectoliters per millisecond = 1,319.81549 imperial gallons per millisecond.
Conversion table
| Hectoliter per Millisecond (hL/ms) | Imperial gallon per Millisecond (imp gal/ms) |
|---|---|
| 0.1 hL/ms | 2.199692483 imp gal/ms |
| 1 hL/ms | 21.99692483 imp gal/ms |
| 10 hL/ms | 219.9692483 imp gal/ms |
| 60 hL/ms | 1,319.81549 imp gal/ms |
| 100 hL/ms | 2,199.692483 imp gal/ms |
| 1,000 hL/ms | 21,996.92483 imp gal/ms |
Reverse conversion: Imperial gallon per Millisecond to Hectoliter per Millisecond
21.99692483 imp gal/ms × 0.0454609 = 1 hL/ms
21.99692483 imperial gallons per millisecond = 1 hectoliters per millisecond.
hectoliters per millisecond = imperial gallons per millisecond × 0.0454609
For a page dedicated to this direction, see Imperial gallon per Millisecond to Hectoliter per Millisecond.
Understanding the Hectoliter per Millisecond (hL/ms)
Volumetric flow rate.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallons per millisecond are in 1 hectoliter per millisecond?
1 hectoliter per millisecond equals 21.99692483 imperial gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter per millisecond to imperial gallon per millisecond?
Multiply the hectoliter per millisecond value by 21.99692483. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per millisecond back to hectoliter per millisecond?
Use the reverse factor: 1 imperial gallon per millisecond equals 0.0454609 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 imperial gallon per millisecond?
Imperial gallon per Millisecond (imp gal/ms) is a unit of flow rate.
Is the hectoliter per millisecond to imperial gallon per millisecond conversion exact?
Yes. Both hectoliter per millisecond and imperial gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 21.99692483 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.