Volume Converter

1 US cup = 236.6 mL; 1 tablespoon = 14.8 mL; 1 teaspoon = 4.9 mL. Australia and Canada use a metric cup of exactly 250 mL, and the UK imperial cup is 284 mL. In baking, these differences matter: substituting an Australian cup for a US cup adds about 13 mL per cup. Coffee mugs typically hold 8-16 fl oz and are not the same as a recipe measuring cup.

1 US gallon = 3.785 liters; 1 UK imperial gallon = 4.546 liters. This 20% difference is why UK MPG figures look higher than US MPG for the same vehicle. Going the other direction: 1 liter = 0.264 US gallons. For scale: a bathtub holds about 40-60 US gallons; a typical car fuel tank holds 12-15 US gallons (45-57 liters).

1 US fluid oz = 29.5735 mL; 1 UK fluid oz = 28.41 mL. Common US conversions: 8 fl oz = 1 cup; 16 fl oz = 1 pint; 32 fl oz = 1 quart; 128 fl oz = 1 gallon. A standard wine bottle is 750 mL = about 25.4 fl oz. A can of soda is 12 fl oz = 355 mL. These are volume measurements, not weight, so density affects how much a given volume weighs.

1 liter = 1,000 mL = 1,000 cm3 = 1 cubic decimeter. This means 1 mL = 1 cc exactly, which is why medicine doses in mL and cc are interchangeable. Engine displacement uses liters: a 2.0L engine has 2,000 cc of swept volume. Fuel efficiency outside the US is often in L/100 km; convert to US MPG by dividing 235.2 by the L/100 km figure.