📖 How Cooking Measurement Converter Works
Recipes rarely agree on units — a British cookbook might call for milliliters, an American one for cups and tablespoons, and a nutrition label for ounces. This converter handles the five most common kitchen volume units instantly, so you can follow any recipe without reaching for a conversion chart taped inside a cabinet door.
Standard Kitchen Conversion Factors
These U.S. customary measurements are what this calculator uses. For example, if a recipe calls for ¾ cup of milk and you only have a tablespoon on hand, ¾ × 16 = 12 tablespoons. Converting the other direction, 30 mL of oil is roughly 2 tablespoons (30 ÷ 14.79 ≈ 2.03).
Quick Reference Table
- 1 teaspoon (tsp): ≈ 4.93 mL
- 1 tablespoon (tbsp): ≈ 14.79 mL = 3 teaspoons
- 1 fluid ounce (oz): ≈ 29.57 mL = 2 tablespoons
- 1 cup: ≈ 236.59 mL = 16 tablespoons = 8 fluid ounces
Why Kitchen Units Get Confusing
The biggest trap is that "ounce" can mean either a unit of volume (fluid ounce, used for liquids) or a unit of weight (used for solids like flour or sugar) — and the two are only equivalent for water-like liquids. A cup of flour weighs far less than a cup of honey, even though both fill the same 236.6 mL of space. This calculator converts volume-to-volume only, so for ingredients denser or lighter than water, a kitchen scale is more accurate than volume conversion alone.
Tips for Accurate Measuring
- Use dry measuring cups for solids (flour, sugar) and liquid measuring cups (with a pour spout) for liquids — they're calibrated differently.
- Level off dry ingredients with a flat edge rather than packing them, unless a recipe specifically calls for "packed" measurement (common with brown sugar).
- For small volumes like teaspoons, use standardized measuring spoons rather than flatware, which vary in actual size.
❓ Is a US cup the same as a metric cup?
No. A US cup is 236.59 mL, while a metric cup (used in Australia, for example) is exactly 250 mL. The difference is small but can matter in precise baking — this calculator uses US customary units.
❓ Why does my converted ounce value look off for flour?
Because "ounce" here refers to fluid ounces (volume), not weight ounces. One cup of all-purpose flour weighs about 4.5 weight-ounces (125g), even though it equals 8 fluid ounces by volume. For weight-sensitive baking, always use a kitchen scale.
❓ How many tablespoons are in a stick of butter?
A standard US stick of butter is ½ cup, which equals 8 tablespoons — a fact worth memorizing since butter is usually measured by the stick rather than poured.