A recipe from an American cookbook calls for cups, a French chef uses deciliters, and an Australian cookbook uses metric cups. Cooking measurement conversion is the bane of international cooks — but it doesn't have to be. Understanding the key conversions unlocks recipes from any country.
The Cup Confusion
Not all cups are equal. The US cup is 236.6 mL (8 US fluid ounces). The metric cup (used in Australia, Canada, New Zealand, and the UK) is 250 mL. The Japanese cup is 200 mL. Always check which cup a recipe uses.
For most cooking, the 13.4 mL difference doesn't matter. For baking, where precision is critical, it can affect the outcome.
Essential Spoon Conversions
- 1 tablespoon (US) = 14.8 mL ≈ 15 mL
- 1 tablespoon (Australian) = 20 mL
- 1 teaspoon (US) = 4.93 mL ≈ 5 mL
- 1 teaspoon (Australian) = 5 mL
These small differences rarely matter in cooking but can affect baking chemistry, especially with leavening agents like baking powder.
Weight vs Volume in Baking
Professional bakers measure by weight, not volume. A cup of flour can weigh anywhere from 100–160 g depending on how it's scooped. But 120 g of flour is always 120 g.
Key baking conversions: 1 cup flour ≈ 120 g, 1 cup sugar ≈ 200 g, 1 cup butter ≈ 227 g, 1 cup milk ≈ 245 g, 1 cup water = 236.6 g.
Liquid Volume Quick Reference
Common recipe conversions:
- 1 cup = 240 mL (rounded)
- 1 pint (US) = 473 mL = 2 cups
- 1 quart (US) = 946 mL = 4 cups
- 1 liter = 4.227 cups
- 1 fluid ounce (US) = 29.6 mL
For quick conversion: cups × 240 = mL. Or mL ÷ 240 = cups.
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