Imperial Gallons to Liters

1 imperial gallon = 4.54609 liters. To convert imperial gallons (imp gal) to liters (L), multiply by 4.54609.

⇄
 
 

How to convert imperial gallons to liters

L = imp gal × 4.54609

Example: convert 8 imperial gallons to liters.
8 imp gal × 4.54609 = 36.36872 L

The same relationship in reverse: 1 liter = 0.2199692483 imperial gallons, so you can also divide by 0.2199692483. Need the other direction? Use the liters to imperial gallons converter.

You will typically need this conversion for UK fuel economy figures and older British recipes.

Imperial Gallons to Liters conversion chart

Imperial Gallons (imp gal)Liters (L)
1 imp gal4.54609 L
2 imp gal9.09218 L
3 imp gal13.63827 L
4 imp gal18.18436 L
5 imp gal22.73045 L
6 imp gal27.27654 L
7 imp gal31.82263 L
8 imp gal36.36872 L
9 imp gal40.91481 L
10 imp gal45.4609 L
15 imp gal68.19135 L
20 imp gal90.9218 L
25 imp gal113.65225 L
30 imp gal136.3827 L
40 imp gal181.8436 L
50 imp gal227.3045 L
75 imp gal340.95675 L
100 imp gal454.609 L
250 imp gal1,136.5225 L
500 imp gal2,273.045 L
1,000 imp gal4,546.09 L

Values rounded to 8 significant figures. The converter above shows up to 12.

About the units

Imperial Gallon (imp gal)

The UK gallon, defined as exactly 4.54609 L — about 20% larger than the US gallon. Still used for fuel economy (mpg) in the UK.

Liter (L)

Exactly one cubic decimeter (1,000 cm³). Used for bottled drinks, fuel and engine size.

Frequently asked questions

How many liters are in a imperial gallon?

1 imperial gallon = 4.54609 liters. Going the other way, 1 liter = 0.2199692483 imperial gallons.

How do I convert imperial gallons to liters?

To convert imperial gallons to liters, multiply by 4.54609. The formula is L = imp gal × 4.54609.

What is 8 imp gal in L?

8 imperial gallons is 36.36872 liters (8 imp gal × 4.54609 = 36.36872 L).

More volume conversions