Is a US gallon the same as an imperial gallon?

No. A US gallon is 3.785 L; an imperial gallon is 4.546 L.

Volume Converter

Convert between liters, gallons, cubic meters, fluid ounces, and more.

Popular volume conversions

Liters to US Gallons1 liter = 0.264172 US gallons. A 2-liter bottle = 0.528 gal. Note: the UK imperial gallon is larger.US Gallons to Liters1 US gallon = 3.78541 liters. The imperial gallon (UK) = 4.54609 L — about 20% larger than a US gallon.

More volume conversions

Milliliters to Liters Liters to Milliliters Cubic Feet to Cubic Meters Cubic Meters to Cubic Feet Cups to Milliliters (mL)Milliliters (mL) to Cups cc to mL Tablespoons to mL Teaspoons to mL Teaspoons to Tablespoons

Volume units

Liter

Milliliter

Cubic Meter

m³

Cubic Centimeter

cm³

Cubic Foot

ft³

Cubic Inch

in³

US Gallon

gal (US)

⚠ This is the US liquid gallon (3.785 L), not the imperial gallon (4.546 L).

Imperial Gallon

gal (imp)

⚠ This is the imperial gallon (4.546 L), not the US gallon (3.785 L).

US Quart

qt (US)

US Pint

pt (US)

US Cup

cup

US Fluid Ounce

fl oz

US Tablespoon

tbsp

US Teaspoon

tsp

What is volume?

Volume measures the amount of three-dimensional space a substance occupies.

Common use cases

Cooking and recipe conversion
Fuel and engine capacity
Chemical and lab measurements
Beverage and container sizing

Ambiguity notes

Gallon can mean US gallon (3.785 L) or imperial gallon (4.546 L). Always specify.

Related categories

Weight & Mass

Frequently asked questions

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