Guides/Liters ↔ gallons

Liters to gallons quick conversion

Fuel economy stickers, water cooler bottles, and import manuals disagree on “gallon.” Always check whether you need theUS gallon or the largerUK (imperial) gallon.

Factors to remember

• 1 US gallon ≈ 3.78541 L → litres ÷ 3.78541 ≈ US gallons.
• 1 UK gallon ≈ 4.54609 L → litres ÷ 4.54609 ≈ UK gallons.
• Quick US mental check: litres × 0.264 ≈ US gallons (because 1/3.785 ≈ 0.264).

Worked examples

1. 50 L → US gal: 50 ÷ 3.78541 ≈ 13.21 US gal.
2. 50 L → UK gal: 50 ÷ 4.54609 ≈ 11.00 UK gal.
3. 10 US gal → L: 10 × 3.78541 ≈ 37.85 L.

Related volume notes

Kitchen cup/ml/oz factors (volume only, not recipes):cups, ml, oz, g. Broader units:metric ↔ imperial.

Common mistakes

• Using US factors on a UK mpg or jerry-can label.
• Treating quarts/pints interchangeably across US and imperial systems.
• Rounding mid-multi-step fuel math too aggressively on long trips.

Converter

Unit Converter

US vs UK at a glance

The UK gallon is about 20% larger than the US gallon. Mixing them on fuel range estimates can throw a long trip off by a full tank fraction.