Volumetric flow rate.
Gallons per Millisecond to Hectoliter per Days Converter — gal/ms to hL/d
Convert Gallon per Millisecond (gal/ms) to Hectoliter per Days (hL/d) using the exact conversion factor (1 gallon per millisecond = 3,270,595.781 hectoliter per days). See the formula, worked examples, and conversion table.
Gallons per Millisecond to Hectoliter per Days 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 3.785411784 / 1.15740741e-6.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallons per Millisecond to Hectoliter per Days
Gallon per Millisecond and Hectoliter per Days 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 days = gallons per millisecond × 3270595.78138
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per millisecond equals 3.785411784 base units, and 1 hectoliter per days equals 0.00000115740740741 base units, so dividing one by the other gives the direct gallon per millisecond-to-hectoliter per days factor of 3270595.78138.
Simple example
1 gal/ms × 3270595.781 = 3,270,595.781 hL/d
1 gallon per millisecond = 3,270,595.781 hectoliter per days.
Real-world example
60 gal/ms × 3270595.781 = 196,235,746.9 hL/d
60 gallons per millisecond = 196,235,746.9 hectoliter per days.
Conversion table
| Gallon per Millisecond (gal/ms) | Hectoliter per Days (hL/d) |
|---|---|
| 0.1 gal/ms | 327,059.5781 hL/d |
| 1 gal/ms | 3,270,595.781 hL/d |
| 10 gal/ms | 32,705,957.81 hL/d |
| 60 gal/ms | 196,235,746.9 hL/d |
| 100 gal/ms | 327,059,578.1 hL/d |
| 1,000 gal/ms | 3,270,595,781 hL/d |
Reverse conversion: Hectoliter per Days to Gallon per Millisecond
1 hL/d × 3.057547e-7 = 3.057547e-7 gal/ms
1 hectoliter per days = 3.057547e-7 gallons per millisecond.
gallons per millisecond = hectoliter per days × 3.057547e-7
For a page dedicated to this direction, see Hectoliter per Days to Gallon per Millisecond.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Understanding the Hectoliter per Days (hL/d)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectoliter per days are in 1 gallon per millisecond?
1 gallon per millisecond equals 3,270,595.781 hectoliter per days, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per millisecond to hectoliter per days?
Multiply the gallon per millisecond value by 3270595.781. The converter above does this instantly to whatever precision you set.
How do I convert hectoliter per days back to gallon per millisecond?
Use the reverse factor: 1 hectoliter per days equals 3.057547e-7 gallons per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
What is a hectoliter per days?
Hectoliter per Days (hL/d) is a unit of flow rate.
Is the gallon per millisecond to hectoliter per days conversion exact?
Yes. Both gallon per millisecond and hectoliter per days are defined by fixed standards rather than physical artifacts, so the factor of 3270595.781 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.