Volumetric flow rate.
Gallon per Minutes to Hectoliter per Days Converter — gal/min to hL/d
Convert Gallon per Minutes (gal/min) to Hectoliter per Days (hL/d) using the exact conversion factor (1 gallon per minutes = 54.50992969 hectoliter per days). See the formula, worked examples, conversion table, and common uses.
Gallon per Minutes 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 6.30901964e-5 / 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 Minutes to Hectoliter per Days
Gallon per Minutes 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. Gallon per Minutes is most often used for us residential and commercial plumbing fixture flow ratings.
Formula
hectoliter per days = gallon per minutes × 54.5099296896
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per minutes equals 0.0000630901964 base units, and 1 hectoliter per days equals 0.00000115740740741 base units, so dividing one by the other gives the direct gallon per minutes-to-hectoliter per days factor of 54.5099296896.
Simple example
1 gal/min × 54.50992969 = 54.50992969 hL/d
1 gallon per minutes = 54.50992969 hectoliter per days.
Real-world example
60 gal/min × 54.50992969 = 3,270.595781 hL/d
60 gallon per minutes = 3,270.595781 hectoliter per days.
Conversion table
| Gallon per Minutes (gal/min) | Hectoliter per Days (hL/d) |
|---|---|
| 0.1 gal/min | 5.450992969 hL/d |
| 1 gal/min | 54.50992969 hL/d |
| 10 gal/min | 545.0992969 hL/d |
| 60 gal/min | 3,270.595781 hL/d |
| 100 gal/min | 5,450.992969 hL/d |
| 1,000 gal/min | 54,509.92969 hL/d |
Reverse conversion: Hectoliter per Days to Gallon per Minutes
54.50992969 hL/d × 0.01834528141 = 1 gal/min
54.50992969 hectoliter per days = 1 gallon per minutes.
gallon per minutes = hectoliter per days × 0.0183452814138
For a page dedicated to this direction, see Hectoliter per Days to Gallon per Minutes.
Understanding the Gallon per Minutes
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
Where it's used: United States (plumbing, pump, and irrigation industry standard)
Uses of the Gallon per Minutes today
- US residential and commercial plumbing fixture flow ratings
- US pump and irrigation system specifications
- US pool and spa filtration system sizing
Understanding the Hectoliter per Days (hL/d)
Volumetric flow rate.
Gallon per Minutes — sources
- NIST Handbook 44 — General tables of units including US customary flow-rate measures.
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 minutes?
1 gallon per minutes equals 54.50992969 hectoliter per days, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per minutes to hectoliter per days?
Multiply the gallon per minutes value by 54.50992969. The converter above does this instantly to whatever precision you set.
How do I convert hectoliter per days back to gallon per minutes?
Use the reverse factor: 1 hectoliter per days equals 0.0183452814 gallon per minutes. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per minutes?
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
What is a hectoliter per days?
Hectoliter per Days (hL/d) is a unit of flow rate.
Is the gallon per minutes to hectoliter per days conversion exact?
Yes. Both gallon per minutes and hectoliter per days are defined by fixed standards rather than physical artifacts, so the factor of 54.50992969 used above is exact to as many digits as you choose to display.
Where is the gallon per minutes still used today?
United States (plumbing, pump, and irrigation industry standard)
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.