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Convert liters, milliliters, US and UK gallons, quarts, pints, cups, fluid ounces and cubic feet/meters. Note that US and UK gallons are different sizes — both are included and labeled.
One US gallon = 3.78541 liters; one UK (imperial) gallon = 4.54609 liters — about 20% bigger. Fuel and recipe conversions go wrong when the wrong gallon is used, which is why this converter labels them clearly. One liter = 1,000 ml = about 4.227 US cups.
3.78541 liters in a US gallon; 4.54609 liters in a UK gallon.
One US cup = 236.588 ml. (A metric cup used in some countries is 250 ml.)
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