🧪 Volume Converter

Convert between liters, gallons, milliliters, cups, fluid ounces, tablespoons, and cubic meters.

Quick Reference

Volume Conversion Guide

Volume measures the amount of space a substance occupies. The metric system uses liters while the imperial system uses gallons, cups, and fluid ounces.

Important: US vs UK Measurements

US and UK volume measurements differ significantly. A US gallon is 3.785 liters, while a UK (imperial) gallon is 4.546 liters — about 20% larger. The same difference applies to cups, pints, and fluid ounces.

Common Conversions

FromToFactor
1 LiterUS Gallons0.264172
1 US GallonLiters3.78541
1 Cup (US)Milliliters236.588
1 Fluid Oz (US)Milliliters29.5735
1 Tablespoon (US)Milliliters14.7868
1 Cubic MeterLiters1,000

Kitchen Volume Reference

Frequently Asked Questions

A US gallon equals 3.78541 liters. A UK (imperial) gallon equals 4.54609 liters. Always check which gallon system is being used — US recipes use US gallons, while UK recipes use imperial gallons.
A US cup equals 236.588 mL. A metric cup (used in Australia, New Zealand) equals exactly 250 mL. A UK cup is 284.131 mL. Most international recipes specify "metric cups" (250 mL).
A UK gallon is about 20% larger (4.546 L vs 3.785 L). This means fuel economy figures from the US and UK aren't directly comparable — a car getting 30 mpg in the US would show about 36 mpg using UK gallons.