There are 16 tablespoons in 1 US cup. Because a tablespoon is a clean, even fraction of a cup, this is one of the most useful conversions to memorize: half a cup is 8 tablespoons, a quarter cup is 4 tablespoons, and an eighth of a cup is 2 tablespoons. It also chains neatly, since 1 tablespoon equals 3 teaspoons, giving you 48 teaspoons in a full cup.
Why 16 tablespoons make a cup
The US customary system defines a tablespoon as exactly half a fluid ounce. Since a cup holds 8 fluid ounces, and each ounce is 2 tablespoons, you get 8 x 2 = 16 tablespoons per cup. That relationship is exact by definition, not a rounded estimate, which is why you can trust it for scaling recipes up or down. If you want the full picture on ounces, see our guide to how many ounces are in a cup.
The full tablespoon conversion table
Here is every common cup fraction expressed in tablespoons and teaspoons:
| Cup fraction | Tablespoons | Teaspoons | Fluid ounces |
|---|---|---|---|
| 1 cup | 16 tbsp | 48 tsp | 8 fl oz |
| 3/4 cup | 12 tbsp | 36 tsp | 6 fl oz |
| 2/3 cup | 10 tbsp + 2 tsp | 32 tsp | 5.33 fl oz |
| 1/2 cup | 8 tbsp | 24 tsp | 4 fl oz |
| 1/3 cup | 5 tbsp + 1 tsp | 16 tsp | 2.67 fl oz |
| 1/4 cup | 4 tbsp | 12 tsp | 2 fl oz |
| 1/8 cup | 2 tbsp | 6 tsp | 1 fl oz |
The awkward thirds
Notice that one-third and two-thirds of a cup do not land on whole tablespoons, because 16 is not divisible by 3. One-third cup works out to 5 tablespoons plus 1 teaspoon, and two-thirds cup is 10 tablespoons plus 2 teaspoons. Many cooks just round one-third cup to 5 tablespoons for forgiving recipes, but if you are baking, add that extra teaspoon. When you need to work in teaspoons, our note on how many teaspoons are in a tablespoon explains the 3-to-1 rule.
When the tablespoon trick saves you
This conversion is most valuable when your quarter-cup or third-cup measure is dirty, missing, or buried in the dishwasher. Instead of hunting, grab your tablespoon and count: need a quarter cup of oil? That is 4 level tablespoons. Need three-quarters of a cup of broth? Count 12. It also helps when you are halving a recipe. Half of one-third cup is tricky as a fraction, but in tablespoons it is simply half of “5 tablespoons plus 1 teaspoon,” which is 2 tablespoons plus 2 teaspoons.
The trick works in reverse too. If a recipe hands you an odd tablespoon count, you can roll it back up into cups to see the bigger picture. Ten tablespoons is just shy of two-thirds of a cup, twelve tablespoons is exactly three-quarters, and fourteen tablespoons is a quarter cup short of a full cup. Seeing the fraction behind the spoon count makes it easier to judge whether you are adding a sensible amount, especially when you are doubling a sauce or stretching a marinade to cover more meat.
Level your spoons for accuracy
A tablespoon conversion is only as good as your technique. For dry ingredients, dip the spoon and sweep the excess off flat with the back of a knife. A heaping tablespoon can hold 50 percent more than a level one, which adds up fast over 16 spoonfuls. For sticky ingredients like honey or peanut butter, a quick spritz of oil on the spoon helps everything slide off cleanly so you actually get the full measure.
Handy ingredient shortcuts
Some kitchen staples are sold in units that map straight onto tablespoons, which makes measuring almost automatic. A stick of US butter weighs 4 ounces and is marked into 8 tablespoons, so half a stick is a quarter cup and a full stick is half a cup. That is why so many baking recipes are written around whole and half sticks: they line up exactly with the cup fractions. Standard-size packets of active dry yeast hold about 2 1/4 teaspoons, or three-quarters of a tablespoon, another number worth recognizing so you are not left converting under pressure.
US vs. metric and Australian tablespoons
A US tablespoon is about 14.79 ml, commonly rounded to 15 ml, and a metric tablespoon is exactly 15 ml, so the two are close enough to swap in everyday cooking. The outlier is Australia, where the standard tablespoon is 20 ml, meaning an Australian cup holds about 12.5 of their tablespoons rather than 16. If you are following a recipe from Australia, do not assume 16 tablespoons per cup. For milliliter conversions across systems, see our guide to how many milliliters are in a cup, and for the link back to fluid ounces, our note on how many ounces are in a cup spells out the volume side.
The bottom line
Sixteen tablespoons make a US cup, and that clean number lets you measure any common fraction with nothing but a tablespoon and a little counting. Memorize the anchors, 16 per cup and 3 teaspoons per tablespoon, and you will rarely be stuck without the right measuring cup again. With those two numbers you can rebuild any cup fraction from a single spoon, which is exactly the kind of quiet confidence that makes cooking faster and less fussy.
