Liters to Gallons (L to gal) Converter

A complete liquid volume converter for kitchen, automotive, and scientific use. Enter a value in any field to instantly convert between all units (US and UK).

US Gallon vs. UK Gallon: A Critical Difference

The most common error when converting "gallons" is not knowing which gallon you are using. The US and UK (Imperial) gallons are **not the same size**.

• 1 US Liquid Gallon = 3.7854 Liters
• 1 UK Imperial Gallon = 4.54609 Liters

As you can see, the **UK gallon is approximately 20% larger** than the US gallon. This is critical for recipes, fuel economy calculations, and scientific measurements. Our calculator includes both to prevent this error.

Conversion Formulas

US Cooking Conversions

For recipes, the smaller US units are all related:

• 1 US Gallon = 4 Quarts
• 1 US Quart = 2 Pints
• 1 US Pint = 2 Cups
• 1 US Cup = 8 Fluid Ounces
• 1 US Fluid Ounce = 2 Tablespoons

Frequently Asked Questions (FAQ)

How many liters are in a gallon?

There are **3.7854 liters** in 1 **US Gallon**.
There are **4.546 liters** in 1 **UK (Imperial) Gallon**.

Is a US gallon the same as a UK gallon?

No. The UK (Imperial) gallon is about 20% larger than the US gallon. (1 UK Gallon = 1.201 US Gallons).

How many liters are in 5 gallons of gas?

In the US, this would be 5 US Gallons, so: 5 × 3.7854 = 18.927 Liters.
In the UK or Canada, this would be 5 Imperial Gallons, so: 5 × 4.546 = 22.73 Liters.

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US Gallon to Liters: Liters = US Gallons × 3.7854 Liters to US Gallons: US Gallons = Liters × 0.264172

UK Gallon to Liters: Liters = UK Gallons × 4.54609 Liters to UK Gallons: UK Gallons = Liters × 0.219969