UK Gallons to Liters Converter
Convert UK gallons to liters instantly. One UK gallon equals exactly 4.54609 liters. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert UK gallons to liters
Worked example: convert 12 UK gallons to liters. Using liters ← UK gallons × 4.54609, we get 12 × 4.54609 = 54.55308 L. To check the result, convert back: 54.55308 L ÷ 4.54609 = 12 imp gal.
Uk gallons to liters chart
| Uk gallons (imp gal) | Liters (L) |
|---|---|
| 1 imp gal | 4.54609 L |
| 2 imp gal | 9.09218 L |
| 3 imp gal | 13.63827 L |
| 4 imp gal | 18.18436 L |
| 5 imp gal | 22.73045 L |
| 6 imp gal | 27.27654 L |
| 8 imp gal | 36.36872 L |
| 10 imp gal | 45.4609 L |
| 12 imp gal | 54.55308 L |
| 15 imp gal | 68.19135 L |
| 20 imp gal | 90.9218 L |
| 25 imp gal | 113.6522 L |
| 30 imp gal | 136.3827 L |
| 40 imp gal | 181.8436 L |
| 50 imp gal | 227.3045 L |
| 75 imp gal | 340.9567 L |
| 100 imp gal | 454.609 L |
| 150 imp gal | 681.9135 L |
| 200 imp gal | 909.218 L |
| 250 imp gal | 1,136.523 L |
| 500 imp gal | 2,273.045 L |
| 1,000 imp gal | 4,546.09 L |
Liters to UK gallons (reverse)
| Liters (L) | Uk gallons (imp gal) |
|---|---|
| 1 L | 0.2199692 imp gal |
| 2 L | 0.4399385 imp gal |
| 5 L | 1.099846 imp gal |
| 10 L | 2.199692 imp gal |
| 20 L | 4.399385 imp gal |
| 50 L | 10.99846 imp gal |
| 100 L | 21.99692 imp gal |
| 250 L | 54.99231 imp gal |
| 500 L | 109.9846 imp gal |
| 1,000 L | 219.9692 imp gal |
About the UK gallon and the liter
The imperial gallon was used across the British Empire and still sits behind UK fuel economy figures in miles per gallon, even though fuel is sold by the liter.
The liter (litre) is 1,000 milliliters, or one cubic decimeter. It is the standard unit for drinks, fuel and fluid capacity almost everywhere outside the US, where gallons are still used at the pump.
One UK gallon equals 4.54609 liters, which makes the UK gallon the larger unit of the two.
Everyday sizes in UK gallons and liters
| Everyday example (approximate) | In UK gallons | In liters |
|---|---|---|
| A large water bottle | 0.21997 imp gal | 1 L |
| A 2-liter soft drink bottle | 0.43994 imp gal | 2 L |
| A bucket | 2.1997 imp gal | 10 L |
| A car fuel tank | 10.998 imp gal | 50 L |
| A bathtub filled for a bath | 32.995 imp gal | 150 L |
| A hot-water cylinder | 43.994 imp gal | 200 L |
Uk gallons to liters FAQ
How many liters are in one UK gallon?
One UK gallon equals exactly 4.54609 liters. In the other direction, one liter equals 0.21996925 UK gallons.
How do I convert UK gallons to liters without a calculator?
convert 12 UK gallons to liters. Using liters ← UK gallons × 4.54609, we get 12 × 4.54609 = 54.55308 L. To check the result, convert back: 54.55308 L ÷ 4.54609 = 12 imp gal. For a quick estimate, round the factor to 4.5. Then 12 imp gal is about 54 L, compared with the exact 54.5531 L (an error of 1%). That is close enough for planning, but use the calculator above when the number matters.
What is a car fuel tank in liters?
A car fuel tank is about 10.998 UK gallons, which is 50 liters. Treat that as an approximate everyday figure rather than an official measurement.
Are the UK gallons and liters the same in every country?
The imperial gallon is exactly 4.54609 L; the US gallon is smaller at 3.785 L. The liter is exactly 1 dm³ and is identical in every country.