UK Gallons to Liters Converter
Convert UK Gallons to Liters with the exact conversion factor, a worked example and a quick-reference table. Runs entirely in your browser.
This converter turns UK Gallons into Liters instantly using the standard definition of both units. It includes the formula, a worked example, and a quick table for common amounts, and it works for any value you type — including decimals and negatives where they make sense.
Quick reference — UK Gallons to Liters
How to use this calculator
- Enter the value in UK Gallons in the input box.
- Read the result in Liters — it updates as you type.
- Use the Swap button to convert in the opposite direction.
- Check the quick-reference table for common UK Gallons amounts.
The formula
Liters = UK Gallons × 4.54609
Worked example
5 gal (UK) = 22.7305 L — in full, 5 UK Gallons converts to 22.7305 Liters. Fuel, drinks and tank sizes are the everyday jobs for this conversion.
Frequently Asked Questions
How do I convert UK Gallons to Liters?
Multiply the value in UK Gallons by 4.54609. For example, 5 UK Gallons × 4.54609 = 22.7305 Liters. To go the other way, divide by 4.54609 instead — or press Swap in the converter above.
How many Liters are in one UK Gallon?
One UK Gallon equals 4.54609 Liters. Scaling up, 10 UK Gallons = 45.4609 Liters and 100 UK Gallons = 454.609 Liters. The converter uses the full-precision factor, so typed values are more precise than the rounded figure quoted here.
Which is bigger, a UK Gallon or a Liter?
A UK Gallon is bigger. One UK Gallon equals 4.54609 Liters, while one Liter is only 0.219969 UK Gallons. So a measurement that looks larger in Liters is reflecting the scale difference, not an error.
What is 5 UK Gallons in Liters?
5 UK Gallons is 22.7305 Liters. The math is 5 × 4.54609 = 22.7305. Try any other amount in the converter above and the result updates as you type.