Volumetric flow rate.
Hectoliters per Millisecond to Imperial gallon per Seconds Converter — hL/ms to imp gal/s
Convert Hectoliter per Millisecond (hL/ms) to Imperial gallon per Seconds (imp gal/s) using the exact conversion factor (1 hectoliter per millisecond = 21,996.92483 imperial gallon per seconds). See the formula, worked examples, and conversion table.
Hectoliters per Millisecond to Imperial 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 100 / 0.00454609.
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 gallon per Seconds
Hectoliter per Millisecond and Imperial 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
imperial gallon per seconds = hectoliters per millisecond × 21996.9248299
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 seconds equals 0.00454609 base units, so dividing one by the other gives the direct hectoliter per millisecond-to-imperial gallon per seconds factor of 21996.9248299.
Simple example
1 hL/ms × 21996.92483 = 21,996.92483 imp gal/s
1 hectoliter per millisecond = 21,996.92483 imperial gallon per seconds.
Real-world example
60 hL/ms × 21996.92483 = 1,319,815.49 imp gal/s
60 hectoliters per millisecond = 1,319,815.49 imperial gallon per seconds.
Conversion table
| Hectoliter per Millisecond (hL/ms) | Imperial gallon per Seconds (imp gal/s) |
|---|---|
| 0.1 hL/ms | 2,199.692483 imp gal/s |
| 1 hL/ms | 21,996.92483 imp gal/s |
| 10 hL/ms | 219,969.2483 imp gal/s |
| 60 hL/ms | 1,319,815.49 imp gal/s |
| 100 hL/ms | 2,199,692.483 imp gal/s |
| 1,000 hL/ms | 21,996,924.83 imp gal/s |
Reverse conversion: Imperial gallon per Seconds to Hectoliter per Millisecond
1 imp gal/s × 0.0000454609 = 0.0000454609 hL/ms
1 imperial gallon per seconds = 0.0000454609 hectoliters per millisecond.
hectoliters per millisecond = imperial gallon per seconds × 0.0000454609
For a page dedicated to this direction, see Imperial gallon per Seconds to Hectoliter per Millisecond.
Understanding the Hectoliter per Millisecond (hL/ms)
Volumetric flow rate.
Understanding the Imperial gallon per Seconds (imp gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallon per seconds are in 1 hectoliter per millisecond?
1 hectoliter per millisecond equals 21,996.92483 imperial gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter per millisecond to imperial gallon per seconds?
Multiply the hectoliter per millisecond value by 21996.92483. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per seconds back to hectoliter per millisecond?
Use the reverse factor: 1 imperial gallon per seconds equals 0.0000454609 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 seconds?
Imperial gallon per Seconds (imp gal/s) is a unit of flow rate.
Is the hectoliter per millisecond to imperial gallon per seconds conversion exact?
Yes. Both hectoliter per millisecond and imperial gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 21996.92483 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.