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Cups to Tablespoons Converter

Convert US cups into tablespoons, teaspoons, millilitres, and fluid ounces, with US, metric, and Australian tablespoon conventions compared side by side.

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Cups to tablespoons converter: compare US, metric, and Australian spoon sizes

Convert US cups into tablespoons instantly, with teaspoon, millilitre, and fluid-ounce equivalents included. This tool is especially useful when a recipe gives cup fractions but you only have spoons, or when you want to compare how the result changes under US, metric / UK, and Australian tablespoon conventions.

How the cups-to-tablespoons conversion works

This calculator starts from the US customary cup, defined as 236.588 millilitres. To find the tablespoon equivalent, it divides that cup volume by the tablespoon size used in the convention you select.

In US cooking, 1 cup equals exactly 16 tablespoons. In metric / UK kitchens, a tablespoon is defined as 15 ml, so 1 US cup works out to about 15.77 tablespoons. In Australian cooking, a tablespoon is 20 ml, so 1 US cup equals about 11.83 tablespoons.

Tablespoons = Cups × 236.588 ml ÷ Tablespoon size (ml)

Example: 1 US cup ÷ 14.7868 ml per US tablespoon = 16 US tablespoons.

Teaspoons = Tablespoons × Teaspoons per tablespoon

US tablespoons are about 2.957 tsp, metric tablespoons are 3 tsp, and Australian tablespoons are 4 tsp.

When cup fractions are easier than weighing

Cup-to-tablespoon conversion is most useful for recipe adjustments, topping measurements, and small-batch cooking where the recipe uses fractions like 1/4 cup, 1/3 cup, or 3/4 cup. Converting those amounts into spoons makes it easier to measure without a dedicated cup set.

It is less reliable for ingredient density problems. If the real question is how much flour, sugar, or butter weighs, use a density-based ingredient converter rather than a pure volume converter.

Why regional tablespoon conventions matter

Most US recipe books assume the US tablespoon at 14.7868 ml. Modern metric cookbooks often assume 15 ml. Australian cookbooks commonly use the 20 ml tablespoon. Those differences become noticeable when you scale recipes or try to match spoon measurements exactly.

If you are converting from cups into spoons for a recipe written in another region, match the tablespoon convention to the cookbook rather than to your measuring-spoon label alone.

Further reading

  • NIST Special Publication 811 — Official NIST guide to SI and customary unit use, useful for checking exact unit relationships and conversion factors.

Frequently asked questions

How many tablespoons are in 1 cup?

In US cooking, 1 cup equals exactly 16 tablespoons. If you switch to a 15 ml metric tablespoon, 1 US cup is about 15.77 tablespoons. Under the Australian 20 ml tablespoon convention, it is about 11.83 tablespoons.

 How many tablespoons is 1/2 cup?

One-half US cup equals 8 US tablespoons. It is about 7.89 metric tablespoons or about 5.91 Australian tablespoons, depending on the spoon convention you need.

 Why does the answer change for Australia?

Because the Australian tablespoon is larger at 20 ml. A bigger tablespoon means fewer tablespoons fit into the same cup volume, so the numeric result is lower even though the total liquid amount stays the same.

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