How Many Tablespoons in a Cup?

Sixteen. A standard US cup holds 16 tablespoons, and that number never changes no matter what you're measuring, because the cup and the tablespoon are both units of volume. Flour, milk, oil, chopped parsley: 16 level tablespoons fill one cup every time.

So why do hundreds of thousands of people search for this every month? Because the useful answers sit one layer down. You're halving a recipe and need a third of a cup in spoons. Your measuring cup is in the dishwasher. A British or Australian cookbook calls for a tablespoon that isn't the same size as yours. Or you're staring at a butter wrapper wondering how many of those printed lines make half a cup. This guide covers all of it, with a chart you can screenshot and the arithmetic behind it, so you can work out any amount on your own.

If you'd rather skip the math entirely, our cooking measurement converters handle cups, spoons, grams and fluid ounces in one place. Everything below is the same math those tools run, shown step by step.

How many tablespoons are in a cup?

One US customary cup equals 16 tablespoons. The relationship comes from how the US system stacks its kitchen units: 3 teaspoons make a tablespoon, 2 tablespoons make a fluid ounce, and 8 fluid ounces make a cup. Multiply it through and you get 2 × 8 = 16 tablespoons, or 3 × 16 = 48 teaspoons, in every cup.

In metric terms, a US cup is 236.6 ml and a US tablespoon is 14.8 ml. Divide one by the other and the answer is 16 on the nose. That tidy ratio is the reason American recipes can bounce between cups and spoons without anyone reaching for a calculator.

US cup to tablespoons, teaspoons and millilitres

👉 Try it: Tablespoons to Teaspoons converter

Tablespoons in ½, ¼, ¾ and other fractions of a cup

Halves and quarters are where 16 earns its keep. Because 16 divides cleanly by 2, 4 and 8, the common fractions land on whole tablespoons: half a cup is 8, a quarter cup is 4, three-quarters is 12, and an eighth of a cup is 2. Those four numbers cover most of what home cooks ever need.

The quick way to remember them is to treat a quarter cup as your building block. A quarter cup is 4 tablespoons, and everything else is a multiple: two quarters (½ cup) is 8, three quarters is 12, four is the full 16. When a recipe asks for something odd like ⅝ cup, think of it as half a cup plus an eighth, which is 8 + 2 = 10 tablespoons.

Going the other way: tablespoons to cups

Sometimes the recipe gives spoons and you'd rather scoop. Divide the number of tablespoons by 16. Four tablespoons is 4 ÷ 16 = ¼ cup. Six tablespoons is ⅜ cup, which most cup sets can't measure directly, so use a ¼ cup plus 2 tablespoons. Twelve tablespoons is ¾ cup, and 24 tablespoons is 1½ cups.

• 2 tbsp = ⅛ cup = 1 fl oz
• 3 tbsp = 3/16 cup, just under ¼ cup
• 4 tbsp = ¼ cup
• 5 tbsp = ⅓ cup minus 1 tsp
• 6 tbsp = ⅜ cup (¼ cup + 2 tbsp)
• 8 tbsp = ½ cup
• 10 tbsp = ⅝ cup
• 12 tbsp = ¾ cup
• 14 tbsp = ⅞ cup (1 cup minus 2 tbsp)

The one-third cup problem, and how to solve it

Thirds are the only common fraction that refuses to cooperate. Sixteen divided by three is 5.333, so a third of a cup isn't a whole number of tablespoons. You'll see '5⅓ tablespoons' in plenty of charts, which is correct and also useless, because nobody owns a ⅓ tablespoon measure.

The fix is to drop down a level to teaspoons. A cup is 48 teaspoons, and 48 divides by three perfectly: one third of a cup is exactly 16 teaspoons. Fifteen of those teaspoons make 5 tablespoons, so you're left with one teaspoon over. That gives ⅓ cup = 5 tablespoons + 1 teaspoon. Two thirds doubles it to 32 teaspoons, or 10 tablespoons + 2 teaspoons.

Does that extra teaspoon matter? In a pan sauce, no. In a cake where ⅓ cup of oil is the only fat, 5 tablespoons alone leaves you about 6% short, and that's enough to notice in the crumb. For baking, measure the full 5 tablespoons plus 1 teaspoon or weigh the ingredient. A cup of vegetable oil weighs roughly 218 grams, so a third of a cup is about 73 grams on a scale.

How many teaspoons are in a cup?

There are 48 teaspoons in a US cup: 16 tablespoons times 3 teaspoons each. It's the number to reach for when a recipe uses tiny amounts, or when you're scaling a spice blend up from a single batch to a jar's worth.

Here's the full ladder of US kitchen volume, from the smallest standard spoon up to the gallon, so you can see where the cup sits:

US kitchen volume ladder

Each step up multiplies by a small whole number (3, 2, 4, 2, 2, 4), which is why the system feels arbitrary until you see it written out. When you're moving between US recipes and metric ones, the millilitres to cups converter saves you from carrying all those decimals around in your head.

US, UK, metric and Australian tablespoons compared

Here's the part most charts skip. The tablespoon isn't one size worldwide, and neither is the cup, so '16 tablespoons in a cup' is strictly a US fact. Cook from an overseas book and the ratio shifts.

Tablespoon and cup sizes by system

The Australian tablespoon is the one that catches people out. At 20 ml it holds four teaspoons instead of three, so it's about a third bigger than an American tablespoon. Make an Australian recipe's '2 tablespoons of soy sauce' with US spoons and you'll come up roughly 10 ml short; go the other way with salt and you'll oversalt. Australian measuring spoon sets usually include a dedicated 20 ml spoon for exactly this reason.

The US versus metric gap is far smaller. A US tablespoon (14.79 ml) and a metric one (15 ml) differ by about 1.4%, which no recipe will ever notice. The bigger trap is the cup: a metric cup is 250 ml, about 6% larger than a US cup, so a Canadian or Kiwi recipe built on metric cups holds closer to 17 US tablespoons per cup. Why the two systems drifted apart in the first place is its own story, told in our guide to metric vs imperial units.

Japan is worth a note too, since Japanese recipes are increasingly popular in translation. A Japanese cup is 200 ml, but the tablespoon (ōsaji) is the standard 15 ml, so there are only about 13⅓ tablespoons in a Japanese cup. If a recipe mentions a rice cup, that's a different unit again: one gō, about 180 ml, the size of the little cup that comes with most rice cookers.

How many tablespoons are in a stick of butter?

In the US, butter is sold in a format built around tablespoons. One standard stick is 8 tablespoons, which is ½ cup, 4 ounces by weight, or about 113 grams. A one-pound box holds four sticks, so a full cup of butter is two sticks, or 16 tablespoons. The wrapper is printed with tablespoon lines so you can slice off exactly what you need.

Butter in sticks, tablespoons, cups and grams

One quirk: the long, thin 'Elgin' sticks sold east of the Rockies and the short, stubby 'Western' sticks common out West look different but hold the same 4 ounces, so the tablespoon math doesn't change. European butter usually comes in 250 g blocks with no spoon markings, which is just over two US sticks, or about 17½ tablespoons. When you're converting a European recipe, the grams to ounces converter gets you from block weight to the stick sizes printed on US wrappers.

Does it matter if the ingredient is dry or liquid?

For counting tablespoons, no. Volume is volume, so 16 tablespoons of flour and 16 tablespoons of water both fill a cup. Where dry and liquid ingredients differ is in how reliably you fill the spoon, and in what that spoonful weighs.

Liquids level themselves, so a tablespoon of milk is the same every time. Powders and grains don't. A level tablespoon of flour, swept flat with the back of a knife, weighs about 7.5 to 8 grams. A heaping one can weigh half again as much. Brown sugar changes with how hard you pack it, and chopped herbs depend on how finely you cut them. When a recipe means a heaping spoon it usually says so; otherwise level is the default in modern US recipes.

It's also why the same cup weighs wildly different amounts depending on what's in it. A cup of flour comes in around 120 grams while a cup of sugar is closer to 200, even though both are 16 tablespoons. We break down the equipment side of this in our piece on dry vs liquid measuring cups, including why scooping flour straight from the bag can add a fifth more than you intended.

What 1 level tablespoon weighs

Weights in the table follow King Arthur Baking's ingredient weight chart and USDA FoodData Central for spooned and leveled measures. Your own spoon may run a gram or two either way, which is exactly why bakers who care about consistency weigh their flour instead of counting spoons.

👉 Try it: Cups to Grams converter

How to measure a cup with only a tablespoon

It happens more than you'd think: the cup is dirty, lost, or packed in a moving box. You can measure a full cup with nothing but a tablespoon. It just takes 16 scoops, and a few habits keep the count honest.

1. Count in groups of four. Four tablespoons is a quarter cup. Make four little piles or tally marks so you don't lose track at scoop eleven.
2. Level every spoon. Sweep dry ingredients flat with a knife. One heaped spoon in sixteen won't ruin anything, but a habit of heaping will.
3. Borrow fluid ounce markings. Two tablespoons is one fluid ounce, so the 8 oz line on a baby bottle or a marked glass is a full cup of liquid.
4. Switch to a scale past half a cup. Sixteen scoops invites mistakes. Weighing is faster and more accurate, especially for flour.

If the only measuring jug in the house is marked in ounces, the cups to fluid ounces converter translates its lines into cups and spoons so you can pour instead of scoop.

Why 16? A short history of the tablespoon

Spoons started out as cutlery, not measures. Through the 1700s and much of the 1800s, a 'spoonful' in an English or American recipe meant whatever spoon was on the table, and cooks adjusted by eye. Recipes from that era are full of instructions like 'butter the size of an egg' because nobody expected precision.

That changed in 1896, when Fannie Farmer published The Boston Cooking-School Cook Book and insisted on level measurements with standard cups and spoons. Her approach caught on with American home cooks, and the spoon sizes settled against the fluid ounce: half an ounce for a tablespoon, a sixth of an ounce for a teaspoon. Since the US cup is 8 fluid ounces, 16 tablespoons per cup followed automatically.

Today the cup, fluid ounce and tablespoon are all defined against the metric system. NIST lists a US tablespoon as exactly half a US fluid ounce, which works out to 14.786765 ml. For nutrition labels the FDA rounds to clean metric numbers, 15 ml for a tablespoon and 240 ml for a cup, which is why the cup on a cereal box is a few millilitres bigger than the one in your drawer. The ratio is still 16 to 1 either way.

Common tablespoon mistakes

• Grabbing a dinner spoon. Cutlery isn't standardized. Two soup spoons from different sets can differ by several millilitres, so a 'tablespoon' from the drawer is a guess.
• Misreading T and t. Older recipes abbreviate tablespoon as a capital T and teaspoon as a lowercase t. Confusing them triples or thirds the amount, which is a disaster with salt or baking soda.
• Rounding ⅓ cup down to 5 tablespoons. It's 5 tablespoons plus a teaspoon. Close enough for soup, not for a cake.
• Mixing spoon systems. An Australian 20 ml tablespoon in an American recipe adds a third more of every spooned ingredient.
• Heaping dry ingredients. Unless the recipe says heaped or rounded, level it. A heaping tablespoon of flour can weigh 50% more than a level one.
• Measuring sticky things in a dry spoon. Honey and molasses cling, and you lose part of every tablespoon to the metal. A quick wipe of oil first lets it slide out clean.

The number to carry in your head is 16, and the backup number is 48 for teaspoons. With those two, plus the habit of dropping to teaspoons whenever a third shows up, you can convert any cup measurement on the fly. For everything else, including grams, fluid ounces and metric cups, let a converter do the arithmetic while you get on with the cooking.