UK Gallons to L

UK Gallons to Liters Conversion Formula

To convert UK (imperial) gallons to liters, use this formula:

The imperial gallon is defined as exactly 4.54609 liters. This is the British gallon and is not the same as the US gallon (3.785411784 liters), so always confirm which gallon is meant.

Step-by-Step Volume Conversion Guide

1. Take your volume in UK gallons
2. Multiply it by 4.54609 (the size of one imperial gallon)
3. Get your result in liters

Common UK Gallons to Liters Conversions

Practical Applications of UK Gallons to Liters Converter

• Fuel economy: Converting British miles-per-gallon figures to metric fuel use
• Cooking & brewing: Scaling British recipes and homebrew batches to liters
• Aquariums & ponds: Sizing UK-quoted tanks in liters
• Shipping: Converting imperial capacities to metric container volumes
• Travel: Reading UK fuel and drink measures in liters

UK Gallon vs US Gallon

The imperial (UK) gallon equals 4.54609 liters, while the US gallon equals only 3.785411784 liters. The imperial gallon is about 20% larger, so never mix the two: this converter uses the imperial gallon exclusively.

Quick Conversion Tips

For a rough estimate, 1 UK gallon ≈ 4.5 liters. Multiply imperial gallons by 4.55 for a precise figure. If your source uses US gallons, multiply by 3.785 instead.