Volume Converter
Convert between liters, milliliters, gallons, fluid ounces, cups, and more.
Result
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What is this?
The Volume Converter moves values between litres, millilitres, US gallons, quarts, pints, cups, fluid ounces, and cubic metres. Cooking with foreign recipes, comparing fuel economy, mixing concentrates, and packing liquid luggage allowances all run into these units.
The tool converts via litres, so every pair stays consistent. Anchors worth knowing: 1 US gallon is 3.78541 litres, 1 US cup is about 0.2366 litres, 1 US fluid ounce is 29.5735 ml, and 1 cubic metre is exactly 1,000 litres. Results show up to six decimals with trailing zeros trimmed.
Two cautions from real-world use. First, US and imperial units differ despite shared names - a US gallon is 3.785 litres but an imperial (UK) gallon is 4.546 litres, about 20 percent more; this tool uses US units, the global default in recipes and fuel figures. Second, fluid ounces measure volume while ordinary ounces measure weight; converting 8 fl oz of honey does not give its weight, because honey is denser than water.
For dry ingredients where weight matters more than volume, pair this with the Weight Converter. All computation stays in your browser.
The tool converts via litres, so every pair stays consistent. Anchors worth knowing: 1 US gallon is 3.78541 litres, 1 US cup is about 0.2366 litres, 1 US fluid ounce is 29.5735 ml, and 1 cubic metre is exactly 1,000 litres. Results show up to six decimals with trailing zeros trimmed.
Two cautions from real-world use. First, US and imperial units differ despite shared names - a US gallon is 3.785 litres but an imperial (UK) gallon is 4.546 litres, about 20 percent more; this tool uses US units, the global default in recipes and fuel figures. Second, fluid ounces measure volume while ordinary ounces measure weight; converting 8 fl oz of honey does not give its weight, because honey is denser than water.
For dry ingredients where weight matters more than volume, pair this with the Weight Converter. All computation stays in your browser.
Formula
Value in target unit = Value / Factor(from) x Factor(to), factors in litres:
l: 1, ml: 0.001, gal: 3.78541, qt: 0.946353, pt: 0.473176, cup: 0.236588, floz: 0.0295735, m3: 1000
l: 1, ml: 0.001, gal: 3.78541, qt: 0.946353, pt: 0.473176, cup: 0.236588, floz: 0.0295735, m3: 1000
Frequently Asked Questions
How many liters in a gallon?
1 US gallon = 3.78541 liters.