🫗Imperial Gallons to Liters Converter

Convert Imperial (UK) gallons to liters and liters to Imperial gallons.

Imperial Gallons (UK gal)

Liters (L)

1 imperial gallon = 4.546 liters

About Imperial Gallons to Liters Converter

Convert Imperial (UK) gallons to liters and liters to Imperial gallons. One Imperial gallon equals approximately 4.54609 liters — larger than the US gallon (3.78541 L). Important for UK fuel economy, beverage volumes, and international comparisons.

How to Use Imperial Gallons to Liters Converter

1
Enter your value
Type a volume in either the Imperial gallons or liters field.
2
See the result
The conversion appears instantly in the other field.
3
Copy the result
Click copy to use the converted volume.

Common Use Cases

UK fuel economy and range calculations
Comparing US vs UK mpg ratings
Understanding British recipe volumes
Agricultural water and chemical usage

Frequently Asked Questions

How many liters is one Imperial gallon?

One Imperial (UK) gallon equals exactly 4.54609 liters.

How is an Imperial gallon different from a US gallon?

An Imperial gallon (4.546 L) is about 20% larger than a US gallon (3.785 L). Always clarify which gallon is intended when comparing fuel economy internationally.

Do UK fuel pumps use Imperial gallons?

No, UK fuel is now sold in liters. Imperial gallons are still referenced for older fuel economy ratings (mpg).