Volume and liquid converter
Convert litres, millilitres, cubic metres, US and imperial gallons, fluid ounces and cubic feet.
US and imperial gallons and fluid ounces are different sizes, so check which your source uses.
How this calculator works
Everything converts through litres: 1 US gallon = 3.785 L, 1 imperial gallon = 4.546 L, 1 m³ = 1,000 L.
Worked example: a 50 US gallon water heater holds 189.3 L. A 1,000 imperial gallon tank holds 4,546 L.
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