Convert US gallon (gal) (gal) to Imperial gallon (gal UK) (gal_uk)
Category: Volume
1 gal = 0.832674 gal_uk
High-precision rounding: 6 decimals
How to convert us gallon (gal) to imperial gallon (gal uk)
We convert by pivoting through the SI base unit for Volume and applying exact factors where applicable.
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Quick conversion table
Handy values for US gallon (gal) → Imperial gallon (gal UK). Click a value to open that exact result.
Conversion formula
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Mixing US gallons (3.785 L) with Imperial gallons (4.546 L).
- Assuming kitchen ‘cup’ equals the same volume in every country.
Unit facts
- US gallon (gal): The US gallon is exactly 3.785411784 L; used for fuel, beverages, and bulk liquids.
- Imperial gallon (gal UK): The Imperial gallon is exactly 4.54609 L; still used in the UK for beer, milk, and fuel economy.
About Volume
Volume measures the space a substance occupies. SI uses cubic meters and liters; customary units like gallons, quarts, and pints persist in recipes, fuel, and containers. Accurate volume work often requires temperature and density considerations (e.g., for fuels).
About US gallon (gal)
US gallon (gal)
Exactly 3.785411784 L. Used for fuel, containers, and recipes in the US. Beware of imperial gallon differences.
History: US defined the gallon separately from the British imperial revision; modern value is exact.
About Imperial gallon (gal UK)
Imperial gallon (UK)
Exactly 4.54609 L. Still appears in UK fuel economy (mpg) and historical tables.
History: Set by the 1824 Weights and Measures Act; differs notably from the US gallon.
Related conversions from gal
Related conversions to gal_uk
- bbl → gal_uk Barrel (oil, bbl)
- ft3 → gal_uk Cubic foot (ft³)
- in3 → gal_uk Cubic inch (in³)
- m3 → gal_uk Cubic meter (m³)
- cup → gal_uk Cup (US)
- l → gal_uk Liter (L)