4.54609
L
4,546
mL
1.20095
gal
0.004546
m3
4.54609
L
4,546
mL
1.20095
gal
0.004546
m3
The Gallons (UK) to Liters Converter provides precise UK imperial gallon to liter conversion.
One UK gallon equals exactly 4.54609 liters — about 20% larger than a US gallon Understanding this conversion is essential for professionals, students, and everyday users working in cooking, agriculture, engineering, and scientific applications that require accurate volume conversions across different measurement systems.
Our converter uses internationally standardized conversion factors, ensuring results are accurate and reliable. Simply enter your value and receive instant results in multiple related units.
1 UK gallon = 4.54609 L exactly. 1 US gallon = 3.785 L. The UK gallon was defined in 1824 as the volume of 10 pounds of water at 62°F.
The results use exact international conversion factors. Compare values against standard reference tables to verify accuracy. Use the appropriate unit for your application — metric for international standards, US customary for American recipes and measurements.
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Default value conversion.
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Results
Scaled-up conversion.
1 UK (imperial) gallon = 4.54609 liters exactly.
A UK gallon (4.546 L) is about 20% larger than a US gallon (3.785 L). 1 UK gallon = 1.201 US gallons.
The UK gallon is still used in some Commonwealth countries for fuel and milk. The UK officially uses liters but some people still reference gallons.
8 UK pints = 1 UK gallon. Each UK pint = 568.261 mL.
The US gallon (231 cubic inches) comes from the English wine gallon. The UK gallon was redefined in 1824 based on the volume of 10 pounds of water.
All conversions use exact international definitions where available, providing results accurate to floating-point precision.
Yes, simply use the inverse formula or look for the reverse converter in our collection.
This conversion is commonly used in cooking, science, and engineering.
This conversion uses internationally defined exact factors wherever possible. Any approximation is noted in the formula section.
Conversion factors are from NIST, BIPM (International Bureau of Weights and Measures), and ISO standards.
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