How Many Tablespoons Is In 2/3 Of A Cup

The Answer Is Simple. But Here's Why You Probably Care

You're standing there with your measuring cups, somewhere between "a pinch" and "a heaping mess," wondering: how many tablespoons are in 2/3 of a cup?

It's one of those conversions that pops up constantly in baking and cooking. Now, maybe you're doubling a recipe that calls for 2/3 cup of flour. Maybe you lost your 2/3 cup measure and need to piece it together with tablespoons. Or maybe you're just the kind of person who wants to know these things.

The short answer: 2/3 of a cup equals 10 tablespoons plus 2 teaspoons (or 10 2/3 tablespoons).

But if you're asking the question, you probably want to understand why — and more importantly, you want to know how to handle this conversion without a calculator every time.

What 2/3 Cup Actually Means

Let's start with the basics. Now, in the standard US measuring system, a cup is divided into 16 tablespoons. That's the anchor point for almost everything.

So if a full cup is 16 tablespoons, then 2/3 of a cup is two-thirds of 16. Which means 666... Do that math, and you get 10.Still, tablespoons. Which, in practical cooking terms, means 10 tablespoons plus a little bit more.

That "little bit more" is what trips people up. It's not a clean number, and that's why this conversion feels awkward. Unlike 1/2 cup (8 tablespoons) or 1/4 cup (4 tablespoons), 2/3 cup doesn't land on a round number.

Why This Measurement Shows Up Everywhere

2/3 cup is one of those sweet spot measurements in recipes. It's more than half but less than a full cup — enough to make a difference in texture or flavor, but not so much that it overwhelms. You'll see it in:

• Muffin and cake batters that need structure but not density
• Sauce recipes where you want body without thickness
• Grain dishes where you're aiming for a specific rice-to-liquid ratio
• Cocktail recipes that call for a generous pour

It's common enough that knowing the tablespoon equivalent saves real time.

How to Convert 2/3 Cup to Tablespoons

Here's the reliable method, step by step.

Step 1: Know Your Base Conversion

One cup = 16 tablespoons. This is your foundation. Everything else builds from here.

Step 2: Multiply by the Fraction

Take 16 tablespoons and multiply by 2/3:

16 × 2/3 = 32/3 = 10.666...

Step 3: Break the Decimal Into Measuring Spoons

That .666 is the tricky part. In cooking, we don't measure decimals — we measure with actual spoons.

There are 3 teaspoons in 1 tablespoon. So take the decimal portion (.666) and multiply by 3:

0.666 × 3 ≈ 2 teaspoons

That gives you the clean, usable measurement: 10 tablespoons + 2 teaspoons.

Quick Reference for Other Common Fractions

Once you have the method down, other conversions become easy too:

• 1/3 cup = 5 tablespoons + 1 teaspoon
• 1/2 cup = 8 tablespoons
• 3/4 cup = 12 tablespoons
• 1/4 cup = 4 tablespoons

Common Mistakes People Make

I've watched enough home cooks struggle with this to know exactly where things go sideways.

Rounding 2/3 to 10 or 11 Tablespoons

Some people just round. "Eh, 10 tablespoons is close enough." Or "I'll use 11 and call it a day.

In baking, that's a real problem. Two tablespoons can change the texture of your cookies, the rise of your bread, or the thickness of your sauce. The 2-teaspoon difference matters.

Forgetting That 1 Tablespoon = 3 Teaspoons

This seems basic, but it's the step that gets skipped. On top of that, you don't. Also, you end up with 10. 6 tablespoons and think you need a fractional tablespoon measure. Convert that decimal to teaspoons instead.

Mixing Up US and UK Measurements

A US tablespoon is about 14.For most recipes, it doesn't matter. And a UK tablespoon is 15 mL. The difference is small, but if you're following a British recipe with American tools, you're technically off by a tiny amount. 8 mL. For precise baking, it can.

Practical Tips That Actually Work

Use a 2/3 Cup Measure When You Have One

This sounds obvious, but hear me out. If your recipe calls for 2/3 cup and you own a 2/3 cup measure, just use it. Don't convert unnecessarily. The conversion is for when you don't* have the right tool.

For more on this topic, read our article on 64 ounces is how many gallons or check out 600 ft squared to meters square.

Measure the 2 Teaspoons First

When you're building 2/3 cup from tablespoons, add the 2 teaspoons to your bowl first. Also, then add 10 tablespoons on top. That way you're not trying to eyeball a fraction of a tablespoon at the end.

For Sticky Ingredients, Use the Spoon-and-Level Method

If you're measuring something sticky like peanut butter or honey, the tablespoon + teaspoon approach gets messy fast. In that case, measure the full 2/3 cup in a liquid measuring cup instead. The conversion is most useful for dry ingredients.

Keep a Cheat Sheet Handy

Write "2/3 cup = 10 tbsp + 2 tsp" on a sticky note and put it on your measuring cup. On top of that, or save it in your phone. You'll use this conversion more than you think.

When Doubling or Halving, Convert First

If you're making 1 and 1/3 cups (doubling 2/3), don't measure two 2/3 cups. Convert to tablespoons first: that's 21 tablespoons plus 1 teaspoon. Easier to measure accurately.

FAQ

How many tablespoons are in 2/3 cup of flour?

10 tablespoons plus 2 teaspoons. The conversion is the same regardless of what you're measuring, since it's a volume-to-volume measurement.

Can I just use 10 tablespoons instead of 2/3 cup?

You can, but you'll be short by about 2 teaspoons. This leads to in liquid-heavy recipes, this is usually fine. In baking, it can affect texture.

Is 2/3 cup the same as 10.5 tablespoons?

Close, but not exact. 2/3 cup is 10.In practice, 666 tablespoons. Using 10.5 tablespoons (10 tablespoons + 1.5 teaspoons) is slightly under, but within the margin of error for most recipes.

How do I measure 2/3 cup if I only have a tablespoon?

Measure 10 tablespoons, then add 2 teaspoons. Since 1 tablespoon equals 3 teaspoons, you can also measure 10 tablespoons plus 2/3 of a tablespoon — but that's harder to eyeball.

Does this conversion work for both liquid and dry ingredients?

Yes. Still, volume is volume. Whether it's milk, sugar, or butter, 2/3 cup always equals 10 tablespoons plus 2 teaspoons.

The Bottom Line

Knowing that 2/3 cup equals 10 tablespoons and 2 teaspoons isn't just kitchen trivia — it's one of those small skills that makes cooking and baking smoother. Even so, you stop second-guessing yourself. In practice, you stop dirtying extra measuring cups. You stop wondering if you're "close enough.

And honestly? Once you commit this conversion to memory, you'll find yourself using it all the time. Not because you set out to, but because 2/3 cup shows up in more recipes than you realized.

So yeah, you could just grab a 2/3 cup measure every time. But now you don't have to. You've got options.

When you’re working with ingredients that vary dramatically in density — like flour versus honey — relying solely on volume can introduce subtle inconsistencies. That said, for recipes where chemistry matters — think cakes, pastries, or sauces — converting the measurement to weight eliminates that variability. On top of that, a quick glance at a reliable conversion chart shows that 2/3 cup of all‑purpose flour is roughly 85 g, whereas 2/3 cup of granulated sugar lands near 135 g. Day to day, a cup of flour can weigh anywhere from 120 g to 150 g depending on how it’s packed, while the same volume of honey registers around 240 g. Keeping a small kitchen scale within arm’s reach not only streamlines the process but also builds confidence that each batch will turn out the same.

Another nuance to consider is temperature. Butter, for instance, behaves differently when it’s cold, softened, or melted. If a recipe calls for “2/3 cup butter, softened,” the volume you scoop will be airy and less dense than the same amount of butter that’s been melted and cooled. In the melted state, 2/3 cup equates to about 155 g, whereas softened butter may sit closer to 160 g. By weighing the butter after it reaches the desired state, you sidestep the guesswork entirely.

For those who love to streamline their prep, batch‑prepping dry mixes can be a game‑changer. Measure out the 2/3 cup equivalents for flour, sugar, and cocoa powder in separate, labeled containers. When it’s time to bake, you simply dump the pre‑measured portions into the mixing bowl, add the liquids, and you’re ready to go. This approach reduces the number of times you have to rinse and refill measuring cups, cuts down on clutter, and speeds up the cooking rhythm.

Even with all these tools at your disposal, a few practical habits keep the process smooth. Always level off dry ingredients with a straight edge; a heaping spoonful can add up to an extra tablespoon or two, throwing off the balance of a recipe. For liquids, pour into a clear measuring cup placed on a flat surface and check the meniscus at eye level — this small step prevents the common “too much” or “too little” errors that can alter texture or flavor. And when you’re in a hurry, remember that a quick mental check — “ten tablespoons plus two teaspoons” — is often faster than hunting for a specialty measuring cup that may be buried in the drawer.

Conclusion

Mastering the 2/3 cup conversion is more than a neat trick; it’s a gateway to greater precision, efficiency, and consistency in the kitchen. Whether you’re scaling a batch, working with sticky substances, or simply looking to reduce the number of dishes you wash, this knowledge empowers you to measure with confidence and focus on what truly matters — creating delicious food. By translating volume into tablespoons and teaspoons, and optionally into weight, you gain flexibility across a wide range of recipes and ingredients. Keep the conversion handy, use the appropriate tools, and let the simplicity of accurate measurements enhance every culinary adventure.