Volumetric flow rate.
Gallon per Days to Hectoliter per Days Converter — gal/d to hL/d
Convert Gallon per Days (gal/d) to Hectoliter per Days (hL/d) using the exact conversion factor (1 gallon per days = 0.0378541178 hectoliter per days). See the formula, worked examples, and conversion table.
Gallon per Days 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 4.38126364e-8 / 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 Gallon per Days to Hectoliter per Days
Gallon per Days 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 = gallon per days × 0.03785411784
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per days equals 4.381264e-8 base units, and 1 hectoliter per days equals 0.00000115740740741 base units, so dividing one by the other gives the direct gallon per days-to-hectoliter per days factor of 0.03785411784.
Simple example
1 gal/d × 0.03785411784 = 0.0378541178 hL/d
1 gallon per days = 0.0378541178 hectoliter per days.
Real-world example
60 gal/d × 0.03785411784 = 2.27124707 hL/d
60 gallon per days = 2.27124707 hectoliter per days.
Conversion table
| Gallon per Days (gal/d) | Hectoliter per Days (hL/d) |
|---|---|
| 0.1 gal/d | 0.0037854118 hL/d |
| 1 gal/d | 0.0378541178 hL/d |
| 10 gal/d | 0.3785411784 hL/d |
| 60 gal/d | 2.27124707 hL/d |
| 100 gal/d | 3.785411784 hL/d |
| 1,000 gal/d | 37.85411784 hL/d |
Reverse conversion: Hectoliter per Days to Gallon per Days
0.0378541178 hL/d × 26.41720524 = 0.9999999989 gal/d
0.0378541178 hectoliter per days = 0.9999999989 gallon per days.
gallon per days = hectoliter per days × 26.4172052358
For a page dedicated to this direction, see Hectoliter per Days to Gallon per Days.
Understanding the Gallon per Days (gal/d)
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 days?
1 gallon per days equals 0.0378541178 hectoliter per days, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to hectoliter per days?
Multiply the gallon per days value by 0.03785411784. The converter above does this instantly to whatever precision you set.
How do I convert hectoliter per days back to gallon per days?
Use the reverse factor: 1 hectoliter per days equals 26.41720524 gallon per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per days?
Gallon per Days (gal/d) 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 days to hectoliter per days conversion exact?
Yes. Both gallon per days and hectoliter per days are defined by fixed standards rather than physical artifacts, so the factor of 0.03785411784 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.