Hectoliter is 100 liter units.
Hectoliters to Gallons Converter — hL to gal
Convert Hectoliter (hL) to Gallon (gal) using the exact conversion factor (1 hectoliter = 26.41720524 gallon). See the formula, worked examples, conversion table, history, and common uses.
Hectoliters to Gallons converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
A US liquid gallon is exactly 3.785411784 liters.
Result = input x 0.1 / 0.003785411784.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectoliters to Gallons
Hectoliter and Gallon appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Specifically: Hectoliter is 100 liter units, and a US liquid gallon is exactly 3.785411784 liters.
Formula
gallons = hectoliters × 26.4172052358
This factor comes from each unit's defined relationship to the category's base unit: 1 hectoliter equals 0.1 base units, and 1 gallon equals 0.003785411784 base units, so dividing one by the other gives the direct hectoliter-to-gallon factor of 26.4172052358.
Simple example
1 hL × 26.41720524 = 26.41720524 gal
1 hectoliter = 26.41720524 gallons.
Real-world example
10 hL × 26.41720524 = 264.1720524 gal
10 hectoliters = 264.1720524 gallons.
Conversion table
| Hectoliter (hL) | Gallon (gal) |
|---|---|
| 1 hL | 26.41720524 gal |
| 5 hL | 132.0860262 gal |
| 10 hL | 264.1720524 gal |
| 25 hL | 660.4301309 gal |
| 50 hL | 1,320.860262 gal |
| 100 hL | 2,641.720524 gal |
Reverse conversion: Gallon to Hectoliter
26.41720524 gal × 0.03785411784 = 1 hL
26.41720524 gallons = 1 hectoliters.
hectoliters = gallons × 0.03785411784
For a page dedicated to this direction, see Gallon to Hectoliter.
Understanding the Hectoliter (hL)
Hectoliter is 100 liter units.
Understanding the Gallon
Gallon (gal) measures volume. The US liquid gallon is defined as exactly 231 cubic inches, equal to 3.785411784 liters. It is classified as a US customary unit.
Where it's used: United States (fuel, beverage, and liquid measurement)
US gallon vs. imperial gallon. The US liquid gallon (3.785411784 L) and the British imperial gallon (4.54609 L) are different units with the same name; always confirm which one a source is using.
Uses of the Gallon today
- Fuel pump and vehicle fuel-economy measurement in the US
- Beverage and liquid product packaging in the US
- Cooking and recipe measurement in US customary units
History of the Gallon
The US gallon descends from the English wine gallon of 231 cubic inches, a standard used for measuring wine in medieval and early modern England, which the American colonies inherited and retained even after England moved to a different imperial gallon in 1824.
England's 1824 Weights and Measures Act replaced the old wine gallon with a new imperial gallon (based on 10 pounds of water), but the US kept the older 231-cubic-inch definition — which is why the US gallon (3.785 L) and the imperial gallon (4.546 L) differ by about 20% today.
Historical origin. Gallon was not the invention of a single named person; it developed through the process described above.
Gallon — sources
- NIST Handbook 44, Appendix C — General tables of units of measurement, including the US gallon definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons are in 1 hectoliter?
1 hectoliter equals 26.41720524 gallons, using the exact defined conversion factor rather than an estimate.
How do I convert hectoliter to gallon?
Multiply the hectoliter value by 26.41720524. The converter above does this instantly to whatever precision you set.
How do I convert gallon back to hectoliter?
Use the reverse factor: 1 gallon equals 0.0378541178 hectoliters. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectoliter?
Hectoliter (hL) is a unit of volume.
What is a gallon?
Gallon (gal) measures volume. The US liquid gallon is defined as exactly 231 cubic inches, equal to 3.785411784 liters. It is classified as a US customary unit.
Is the hectoliter to gallon conversion exact?
Yes. The US liquid gallon is defined as exactly 231 cubic inches, equal to 3.785411784 liters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between us gallon vs. imperial gallon?
The US liquid gallon (3.785411784 L) and the British imperial gallon (4.54609 L) are different units with the same name; always confirm which one a source is using.