Cooking Unit Converter
The cooking unit converter translates cup measurements into the four most common cooking volume units: milliliters, tablespoons, teaspoons, and fluid ounces. Use it when a recipe mixes measurement systems or when scaling requires more precise units.
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Formula
1 cup = 236.588 ml = 16 tbsp = 48 tsp = 8 fl oz
The US legal cup is defined as exactly 240 ml, but the US customary cup (used in most recipes) is 236.588 ml. One cup contains 16 tablespoons, 48 teaspoons, and 8 fluid ounces. All conversions are exact ratios — no rounding error accumulates when going from cups to any of these units.
How to use the Cooking Unit Converter
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Results update in real time as you type.
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Why cooking unit conversions matter
American recipes typically use volume measurements — cups, tablespoons, and teaspoons — while European and scientific recipes use weight in grams. When cooking across cultures, a unit converter is essential. Volume measurements are also imprecise for solid ingredients: a cup of packed brown sugar weighs about 220 grams, while a cup of sifted powdered sugar weighs closer to 115 grams. For liquids — water, milk, oil, broth — volume and weight are interchangeable (1 ml of water = 1 gram), making this converter perfectly accurate. For solids, convert to grams using ingredient-specific density data for the best precision. Small quantity conversions are especially useful: if you need 1/3 cup of broth but your measuring cup is dirty, knowing that equals about 5 tablespoons and 1 teaspoon lets you measure with a tablespoon instead.
US vs. metric vs. imperial cups
Not all cups are created equal, which can cause real problems when following international recipes. The US customary cup is 236.588 ml. The US legal cup (used in nutrition labeling) is exactly 240 ml. The metric cup used in Australia, Canada, and some other countries is exactly 250 ml. The UK imperial cup is 284 ml. The difference between a US cup and an Australian metric cup is about 6%, which is negligible for cooking but noticeable in baking. When following a recipe from another country, check which cup size it uses. Australian baking recipes often specify the 250 ml metric cup, so if you are measuring with a standard US cup, you will be short by about 5–6% on every liquid measurement.
Tips & Insights
Know your tablespoon equivalents by memory
Memorizing that 1/4 cup = 4 tablespoons, 1/3 cup = 5 tablespoons + 1 teaspoon, and 1/2 cup = 8 tablespoons lets you substitute measuring tools quickly without needing a calculator for common amounts.
Use a liquid measuring cup for liquids only
Liquid measuring cups have a spout and are read at eye level. Dry measuring cups are flat-rimmed for leveling off. Using the wrong type introduces volume errors of up to 10% for common ingredients.
For baking, consider converting to grams
Once you have the ml value from this converter, note that 1 ml of water = 1 gram. For milk, multiply by 1.03. For honey, multiply by 1.42. Weight-based baking eliminates scoop-variation errors.
Worked Examples
Standard cup of milk
236.6 ml | 16 tablespoons | 48 teaspoons | 8 fluid ounces — all equivalent to a standard US cup of any liquid.
Two-thirds cup of oil
157.8 ml | 10.7 tablespoons | 32 teaspoons | 5.3 fluid ounces — useful when a 2/3 cup measure isn't available.
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Frequently Asked Questions
Is a US cup different from an Australian cup?
Yes. A US customary cup is 236.6 ml. An Australian metric cup is 250 ml — about 5.6% larger. For casual cooking this rarely matters, but for baking it can affect texture and rise.
How many ml is 1/4 cup?
One-quarter cup equals 59.15 ml, or about 59 ml. It is also equal to 4 tablespoons or 12 teaspoons.
How many tablespoons is 1/3 cup?
One-third cup equals 5 tablespoons plus 1 teaspoon, or 5.33 tablespoons total. This is one of the most useful conversions to memorize because 1/3 cup measures are rare in standard measuring sets.
Can I use this converter for dry ingredients?
For volume-to-volume conversion, yes. But for weight-sensitive baking, convert to grams instead, since the weight of a cup varies by ingredient density.
What is the difference between a fluid ounce and an ounce?
A fluid ounce measures volume (29.57 ml). A regular ounce measures weight (28.35 grams). Water happens to be very close in both — 1 fl oz of water weighs about 29.6 grams — but for other substances they differ significantly.
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