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Imperial Gallon to Liter Converter

1 Imperial Gallon = 4.54609 Liter

4.54609

1 Imperial Gallon = 4.54609 Liter

Imperial Gallon to Liter Conversion Table

Imperial Gallon (gal (imp))Liter (L)
00
14.54609
522.73045
1045.4609
25113.65225
50227.3045
100454.609

Imperial Gallon to Liter Formula

1 Imperial Gallon = 4.54609 Liters. To convert imperial gallons to liters, multiply by 4.54609.

Example: Convert 5 Imperial Gallons to Liters

5 × 4.54609 = 22.73045
Result: 5 Imperial Gallons = 22.73045 Liters

Comparing Traditional British and Metric Volume Units

Imperial gallons were historically used throughout the United Kingdom and many Commonwealth countries, while liters are now the standard volume unit in most parts of the world.

Why Imperial Gallons Still Appear

Although liters are more common today, Imperial gallons continue to appear in older documentation, fuel economy figures and some specialized industries.

A Larger Gallon

An Imperial gallon is larger than a US gallon, which means it converts to more liters than many people expect.

Fuel Economy Example

Older British vehicle specifications often reference miles per Imperial gallon rather than liters per 100 kilometers.

How to Convert Imperial Gallons to Liters

Multiply Imperial gallons by 4.54609. For example: 1 Imp gal = 4.55 L 10 Imp gal = 45.46 L

FAQ

Why are liters more common internationally?
Liters are part of the metric system and are used in most countries for liquids and beverages.
What does 1 Imperial gallon equal in liters?
One Imperial gallon equals approximately 4.546 liters.
Is an Imperial gallon larger than a US gallon?
Yes. An Imperial gallon holds about 20% more liquid than a US gallon.

Reviewed and verified by ConvertAmore

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All calculations are based on internationally recognized measurement standards and established conversion formulas. Learn more about our calculation methodology, precision, and sources.

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