How Many Tablespoons in a Cup | The Only Conversion You Need

One US cup contains exactly 16 tablespoons, a constant ratio for any dry or liquid ingredient measured by volume.

Getting a recipe wrong because of a measurement mix-up is frustrating. The question “how many tablespoons in a cup” has one simple answer: sixteen. But that number only travels cleanly inside the US customary system. Switch to a UK, Australian, or metric cup and the count changes. This piece covers the straight conversion, the fractional breakdowns every cook needs, and the traps that turn a correct number into a failed dish.

The Basic Conversion: 1 Cup Always Equals 16 Tablespoons

The US customary cup, the standard in American kitchens, is exactly 16 tablespoons. This is a volume measurement, so it holds true whether you are measuring flour, sugar, water, or olive oil. One US tablespoon equals 15 mL, and 16 of them make one cup at 237 mL (236.588 to be precise).

For quick math: divide any tablespoon count by 16 to get cups, or multiply cups by 16 to get tablespoons. A half-cup is 8 tablespoons, a quarter-cup is 4 tablespoons, and a third-cup works out to 5 tablespoons plus 1 teaspoon.

Fractional Cup Equivalents: Every Cook’s Cheat Sheet

Recipes rarely call for a whole cup of a single ingredient. Here are the common fractions and their tablespoon equivalents, verified against standard US measurements.

• 3/4 cup = 12 tablespoons
• 2/3 cup = 10 tablespoons + 2 teaspoons
• 1/2 cup = 8 tablespoons
• 3/8 cup = 6 tablespoons
• 1/3 cup = 5 tablespoons + 1 teaspoon
• 1/4 cup = 4 tablespoons
• 1/8 cup = 2 tablespoons
• 1/16 cup = 1 tablespoon

Memorize the half-cup, third-cup, and quarter-cup values. Those three cover most recipe scaling needs. The teaspoon additions matter: 3 teaspoons make 1 tablespoon, so 2/3 cup saves you from measuring a partial tablespoon.

Where the Conversion Breaks: International Cups and Tablespoons

The 16-tablespoon rule only holds for US customary measures. Travel abroad or open a cookbook from another country and the numbers shift. The differences are not subtle — using an Australian tablespoon in a US recipe gives you 25% more volume per spoonful.

• Australia: 1 cup = 250 mL; 1 tablespoon = 20 mL. One Australian cup equals 12.5 Australian tablespoons.
• United Kingdom (Imperial): 1 cup ≈ 284 mL; 1 UK tablespoon ≈ 17.75 mL. Roughly 16 tablespoons per cup, but tablespoons are larger.
• Metric cup (general): 1 cup = 250 mL. Works out to about 15.77 metric tablespoons per cup.
• Japan: 1 cup = 200 mL.
• US legal cup (FDA nutrition labels): 240 mL, not the customary 237 mL. The difference is 3.4 mL — negligible in home cooking but enforced in regulated nutrition data.

If a recipe lists metric weights, ignore the cup entirely and use a kitchen scale. Volume conversions across systems are a trap.

The Two Traps That Ruin Recipes

Trap one: ignoring ingredient density. A cup of flour and a cup of butter both measure 16 tablespoons by volume, but their weights are completely different. One cup of all-purpose flour weighs about 120–125 grams; one cup of butter weighs 227 grams. Substituting a weight measurement (grams) for a volume measurement (tablespoons) without a conversion chart will throw off any recipe built on ratios, especially baking.

Trap two: using the wrong tablespoon size. A US tablespoon holds 15 mL. An Australian tablespoon holds 20 mL. If you use Australian spoons in a US recipe, you add 25% more ingredient per spoonful — enough to turn a cake dry or a sauce thin. Stick to US-standard measuring spoons when cooking from American recipes. The small cheap set from any grocery store is calibrated to the 15 mL standard.