Volume Converter: Litres, Gallons, Cups & Fluid Ounces
Convert mL, litres, cubic centimetres, US kitchen and liquid units, and explicitly labelled Imperial units with a live equivalents table.
US and Imperial gallons are different
A US liquid gallon is exactly 3.785411784 litres. An Imperial gallon is exactly 4.54609 litres, so an unlabelled “gallon” can create a substantial error.
US and Imperial fluid ounces and pints also differ. This converter keeps the system name in every label and result.
Volume is not weight
Millilitres and cups measure space occupied; grams and ounces by weight measure mass. Water is close to one gram per millilitre under ordinary kitchen conditions, but other ingredients need their own density.
Examples
Litres to US gallons
Input
10 L
Show result
Result
About 2.64172 US gal
Compare gallon systems
Input
1 Imperial gallon
Show result
Result
About 1.20095 US gallons
Frequently Asked Questions
How many litres are in a US gallon?
One US liquid gallon is exactly 3.785411784 litres.
Are US and UK pints equal?
No. A US liquid pint is 473.176473 mL; an Imperial pint is 568.26125 mL.
Can I convert millilitres directly to grams?
Only when the substance density is known. Use the ingredient-aware Millilitres to Grams Calculator for kitchen ingredients.
References
Related Tools
Food
Millilitres to Grams Calculator
Convert mL to grams for water, flour, sugar, butter, oil, honey, and other ingredients.
Food
Grams to Cups Converter
Convert grams to US cups, tablespoons, teaspoons, and mL for common ingredients.
Unit Converters
Weight and Mass Converter: kg, lb, oz, g & Stone
Convert milligrams, grams, kilograms, tonnes, ounces, pounds, and stone.
Unit Converters
Area Converter: Square Feet, Acres, Hectares & More
Convert metric and Imperial square units, acres, hectares, and square miles.