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Common conversions and measurement tables
The metric system is based on the liter (L), which is defined as exactly 1 cubic decimeter (dm³) or 1000 cubic centimeters (cm³).
US and UK fluid measurements differ! A US gallon is 3.785 liters, while a UK gallon is 4.546 liters. Always check which system your recipe uses.
For cooking, 1 US cup = 236.6 mL, but metric cups are exactly 250 mL. Australian recipes often use the metric cup.
Oil is measured in barrels (1 barrel = 159 liters). Shipping containers use cubic meters (m³) or cubic feet (ft³).