Volumetric flow rate.
Imperial gallons per Millisecond to Hectoliter per Seconds Converter — imp gal/ms to hL/s
Convert Imperial gallon per Millisecond (imp gal/ms) to Hectoliter per Seconds (hL/s) using the exact conversion factor (1 imperial gallon per millisecond = 45.4609 hectoliter per seconds). See the formula, worked examples, and conversion table.
Imperial gallons per Millisecond to Hectoliter 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 4.54609 / 0.1.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallons per Millisecond to Hectoliter per Seconds
Imperial gallon per Millisecond and Hectoliter 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
hectoliter per seconds = imperial gallons per millisecond × 45.4609
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per millisecond equals 4.54609 base units, and 1 hectoliter per seconds equals 0.1 base units, so dividing one by the other gives the direct imperial gallon per millisecond-to-hectoliter per seconds factor of 45.4609.
Simple example
1 imp gal/ms × 45.4609 = 45.4609 hL/s
1 imperial gallon per millisecond = 45.4609 hectoliter per seconds.
Real-world example
60 imp gal/ms × 45.4609 = 2,727.654 hL/s
60 imperial gallons per millisecond = 2,727.654 hectoliter per seconds.
Conversion table
| Imperial gallon per Millisecond (imp gal/ms) | Hectoliter per Seconds (hL/s) |
|---|---|
| 0.1 imp gal/ms | 4.54609 hL/s |
| 1 imp gal/ms | 45.4609 hL/s |
| 10 imp gal/ms | 454.609 hL/s |
| 60 imp gal/ms | 2,727.654 hL/s |
| 100 imp gal/ms | 4,546.09 hL/s |
| 1,000 imp gal/ms | 45,460.9 hL/s |
Reverse conversion: Hectoliter per Seconds to Imperial gallon per Millisecond
45.4609 hL/s × 0.02199692483 = 1 imp gal/ms
45.4609 hectoliter per seconds = 1 imperial gallons per millisecond.
imperial gallons per millisecond = hectoliter per seconds × 0.0219969248299
For a page dedicated to this direction, see Hectoliter per Seconds to Imperial gallon per Millisecond.
Understanding the Imperial gallon per Millisecond (imp gal/ms)
Volumetric flow rate.
Understanding the Hectoliter per Seconds (hL/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectoliter per seconds are in 1 imperial gallon per millisecond?
1 imperial gallon per millisecond equals 45.4609 hectoliter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per millisecond to hectoliter per seconds?
Multiply the imperial gallon per millisecond value by 45.4609. The converter above does this instantly to whatever precision you set.
How do I convert hectoliter per seconds back to imperial gallon per millisecond?
Use the reverse factor: 1 hectoliter per seconds equals 0.0219969248 imperial gallons per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per millisecond?
Imperial gallon per Millisecond (imp gal/ms) is a unit of flow rate.
What is a hectoliter per seconds?
Hectoliter per Seconds (hL/s) is a unit of flow rate.
Is the imperial gallon per millisecond to hectoliter per seconds conversion exact?
Yes. Both imperial gallon per millisecond and hectoliter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 45.4609 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.