Volumetric flow rate.
Gallon per Hours to Hectoliters per Millisecond Converter — gal/h to hL/ms
Convert Gallon per Hours (gal/h) to Hectoliter per Millisecond (hL/ms) using the exact conversion factor (1 gallon per hours = 1.051503e-8 hectoliter per millisecond). See the formula, worked examples, and conversion table.
Gallon per Hours to Hectoliters 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 1.05150327e-6 / 100.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Hours to Hectoliters per Millisecond
Gallon per Hours and Hectoliter 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
hectoliters per millisecond = gallon per hours × 1.051503e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per hours equals 0.00000105150327333 base units, and 1 hectoliter per millisecond equals 100 base units, so dividing one by the other gives the direct gallon per hours-to-hectoliter per millisecond factor of 1.051503e-8.
Simple example
1 gal/h × 1.051503e-8 = 1.051503e-8 hL/ms
1 gallon per hours = 1.051503e-8 hectoliters per millisecond.
Real-world example
60 gal/h × 1.051503e-8 = 6.30902e-7 hL/ms
60 gallon per hours = 6.30902e-7 hectoliters per millisecond.
Conversion table
| Gallon per Hours (gal/h) | Hectoliter per Millisecond (hL/ms) |
|---|---|
| 0.1 gal/h | 1.051503e-9 hL/ms |
| 1 gal/h | 1.051503e-8 hL/ms |
| 10 gal/h | 1.051503e-7 hL/ms |
| 60 gal/h | 6.30902e-7 hL/ms |
| 100 gal/h | 0.0000010515 hL/ms |
| 1,000 gal/h | 0.000010515 hL/ms |
Reverse conversion: Hectoliter per Millisecond to Gallon per Hours
1.051503e-8 hL/ms × 95101938.85 = 0.9999997401 gal/h
1.051503e-8 hectoliters per millisecond = 0.9999997401 gallon per hours.
gallon per hours = hectoliters per millisecond × 95101938.8489
For a page dedicated to this direction, see Hectoliter per Millisecond to Gallon per Hours.
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
Understanding the Hectoliter per Millisecond (hL/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectoliters per millisecond are in 1 gallon per hours?
1 gallon per hours equals 1.051503e-8 hectoliters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per hours to hectoliter per millisecond?
Multiply the gallon per hours value by 1.051503e-8. The converter above does this instantly to whatever precision you set.
How do I convert hectoliter per millisecond back to gallon per hours?
Use the reverse factor: 1 hectoliter per millisecond equals 95,101,938.85 gallon per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per hours?
Gallon per Hours (gal/h) is a unit of flow rate.
What is a hectoliter per millisecond?
Hectoliter per Millisecond (hL/ms) is a unit of flow rate.
Is the gallon per hours to hectoliter per millisecond conversion exact?
Yes. Both gallon per hours and hectoliter per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 1.051503e-8 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.