US cooking uses customary units: teaspoons, tablespoons, cups, fluid ounces, pints, quarts, and gallons. Europe, Asia, and Australia use metric (millilitres, litres). US ratios follow a clean doubling pattern: 3 tsp = 1 tbsp, 16 tbsp = 1 cup, 2 cups = 1 pint, 2 pints = 1 quart, 4 quarts = 1 gallon — easy to memorise as each step doubles the previous.
A US cup is exactly 8 US fluid ounces = 236.588 mL. The UK tablespoon (15 mL) matches the US tablespoon closely; however, Australia uses a 20 mL tablespoon — a real source of recipe discrepancy. For dry ingredients, volume measurements are imprecise because packing density varies (a cup of sifted cake flour ≈ 100 g; a packed cup ≈ 150 g). Professional bakers weigh ingredients using mass; this converter handles liquid volume measurements only.
| 1 cup | = 16 tbsp = 236.6 mL |
| 1 tbsp | = 3 tsp = 14.79 mL |
| 1 tsp | = 4.929 mL |
| 1 pint | = 2 cups = 473.2 mL |
| 1 quart | = 4 cups = 946.4 mL |
| 1 US gallon | = 16 cups = 3,785 mL |