Quick Answer: There are 10 tablespoons plus 2 teaspoons in 2/3 cup. You can also write it as 10 2/3 tablespoons, but that is harder to measure in a real kitchen. The easiest exact method is to measure 10 full tablespoons, then add 2 teaspoons.
Tested in Maya’s kitchen, July 2026. Last updated: July 2026.
The Exact Conversion: 2/3 Cup to Tablespoons
One cup equals 16 tablespoons. Two-thirds of 16 is 10.667, which rounds to 10 tablespoons and 2 teaspoons (since 3 teaspoons equal 1 tablespoon, and 0.667 tablespoons equals exactly 2 teaspoons).
Here is the math broken down:
- 1 cup = 16 tablespoons
- 2/3 × 16 = 10.667 tablespoons
- 0.667 tablespoons = 2 teaspoons (1 tablespoon = 3 teaspoons; 0.667 × 3 = 2)
- Final answer: 10 tablespoons + 2 teaspoons
Full Conversion Chart: Cup Fractions to Tablespoons and Teaspoons
Use this table any time a recipe calls for a fraction of a cup and you only have tablespoon and teaspoon measures available.
| Cup Measurement | Tablespoons | Teaspoons | Fluid Ounces | Milliliters |
|---|---|---|---|---|
| 1 cup | 16 tbsp | 48 tsp | 8 fl oz | 240 mL |
| 3/4 cup | 12 tbsp | 36 tsp | 6 fl oz | 180 mL |
| 2/3 cup | 10 tbsp + 2 tsp | 32 tsp | 5.3 fl oz | 160 mL |
| 1/2 cup | 8 tbsp | 24 tsp | 4 fl oz | 120 mL |
| 1/3 cup | 5 tbsp + 1 tsp | 16 tsp | 2.7 fl oz | 80 mL |
| 1/4 cup | 4 tbsp | 12 tsp | 2 fl oz | 60 mL |
| 1/8 cup | 2 tbsp | 6 tsp | 1 fl oz | 30 mL |
How to Measure 2/3 Cup Without a 2/3 Cup Measure
Most measuring cup sets include 1/4, 1/3, 1/2, and 1 cup. If yours does not have a 2/3 cup, here are the four most reliable methods:
Option 1: Use a 1/3 cup twice. Fill your 1/3 cup measure twice. Two 1/3 cups equal exactly 2/3 cup. This is the fastest and most accurate no-math method.
Option 2: Use tablespoons and teaspoons. Measure 10 full tablespoons, then add 2 teaspoons. This is exact but slower since you are filling 12 individual scoops. Count out loud or use a tally to avoid losing your place.
Option 3: Use a liquid measuring cup with markings. Most 2-cup liquid measuring cups have a 2/3 cup line on the side. Pour to that line for liquids, oil, or milk. Do not use a liquid measuring cup for flour or sugar: you cannot level the top, so the measurement will be off.
Option 4: Use a kitchen scale. Weigh the ingredient instead of measuring by volume. For water or milk, 2/3 cup = 158 grams. Other ingredients vary by density (see table below). A kitchen scale is the most accurate method for baking.
2/3 Cup in Weight: Common Cooking Ingredients
Volume measurements like cups are not always consistent for dry ingredients because density varies by how the ingredient was packed or sifted. Use these weights when accuracy matters.
| Ingredient | 2/3 Cup in Grams | 2/3 Cup in Ounces | Notes |
|---|---|---|---|
| Water | 158g | 5.6 oz | Universal liquid reference |
| All-purpose flour (spooned and leveled) | 83g | 2.9 oz | Scooping directly packs in ~20% more |
| Granulated sugar | 133g | 4.7 oz | |
| Brown sugar (packed) | 147g | 5.2 oz | Pack firmly into the cup |
| Rolled oats | 60g | 2.1 oz | Old-fashioned or quick oats |
| Uncooked white rice (long-grain) | 130g | 4.6 oz | Yields about 1.5 cups cooked |
| Whole milk | 163g | 5.7 oz | |
| Olive oil | 147g | 5.2 oz | |
| Honey | 226g | 8.0 oz | Much denser than water |
| Plain breadcrumbs (dry) | 75g | 2.6 oz | Italian or plain seasoned |
| Greek yogurt (plain) | 170g | 6.0 oz | Full-fat or low-fat |
| Shredded mozzarella | 75g | 2.6 oz | Lightly packed |
Maya’s kitchen note: I almost always weigh flour now instead of measuring by cup. A scooped cup of flour reliably runs 10 to 20% heavier than a properly spooned-and-leveled cup, which matters in baked goods. If a recipe calls for 2/3 cup flour, use the spoon-and-level method: spoon flour into the measuring cup with a separate spoon (never scoop directly from the bag), then sweep a straight edge across the top to level it.
Common Recipes That Call for 2/3 Cup
2/3 cup shows up in a specific set of cooking contexts. Knowing which ones helps you recognize it without second-guessing the measurement mid-recipe.
- Overnight oats or oatmeal: Many single-serving recipes use 2/3 cup rolled oats (60g) for a filling, thick portion that does not get watery overnight
- Meatball or meatloaf binders: A doubled batch of most meatball recipes (going from 1/3 to 2/3 cup breadcrumbs) uses this measurement as the binder for 1.5 to 2 lbs of ground meat
- Baking (muffins and quick breads): 2/3 cup flour, 2/3 cup sugar, and 2/3 cup milk appear in many standard 6-muffin recipes
- Dry rice per serving: 2/3 cup dry long-grain white rice per person is a standard meal prep portion, yielding about 1.5 cups cooked rice
- Marinades for 1 pound of protein: Most marinade recipes that scale to a 1-pound portion of chicken, beef, or fish call for 2/3 cup of the liquid base (soy sauce, citrus juice, or oil)
- Protein shakes and smoothies: 2/3 cup Greek yogurt (170g) is a common base for high-protein smoothies, adding roughly 15g of protein before other ingredients
What Doesn’t Work When Measuring 2/3 Cup
These are the three most common measurement mistakes with this specific fraction:
Mistake 1: Counting tablespoons without tracking. Measuring 10 tablespoons one at a time is tedious and easy to lose track of. Losing count at tablespoon 7 or 8 and adding 2 extra tablespoons of flour or liquid is the most common version of this error. Fix: count out loud, or use a small dish and move each tablespoon to it as you measure, rather than counting from memory.
Mistake 2: Using a liquid measuring cup for dry ingredients. Liquid measuring cups are designed to be read at eye level when filled. Flour, sugar, or breadcrumbs measured this way cannot be leveled accurately. Fix: use dry measuring cups for dry ingredients and liquid cups for liquids.
Mistake 3: Scooping flour directly from the bag. Scooping compacts flour and can add 15 to 25% more weight than a properly spooned measurement. For baking, this leads to dense, dry results. Fix: always spoon flour into the cup and level with a straight edge. For anything where precision matters, weigh it.
FAQ: How Many Tablespoons in 2/3 Cup
Q: How many tablespoons are in 2/3 cup exactly?
10 tablespoons plus 2 teaspoons. The decimal is 10.667 tablespoons, which is not practical to measure directly in a kitchen.
Q: What is the easiest way to measure 2/3 cup without a 2/3 cup measure?
Fill a 1/3 cup measure twice. Two 1/3 cups equal exactly 2/3 cup. This is faster and more accurate than counting out 10 tablespoons plus 2 teaspoons.
Q: How many teaspoons are in 2/3 cup?
32 teaspoons. There are 3 teaspoons per tablespoon, and 10 tablespoons plus 2 teaspoons equals 30 + 2 = 32 teaspoons total.
Q: How many fluid ounces is 2/3 cup?
5.3 fluid ounces. For weight in ounces, the number depends on the ingredient: water is 5.6 oz, flour is about 2.9 oz, and granulated sugar is about 4.7 oz per 2/3 cup.
Q: How many milliliters is 2/3 cup?
160 milliliters. A standard US cup equals 240 mL, and 2/3 of 240 = 160.
Q: Is 2/3 cup the same as 10 tablespoons?
No. 2/3 cup equals 10 tablespoons plus 2 teaspoons. Ten tablespoons alone equals 5/8 cup, which is slightly less than 2/3 cup. The 2-teaspoon difference matters in precise recipes.
Q: How do I double 2/3 cup?
Double 2/3 cup equals 1 and 1/3 cups. In tablespoons: 21 tablespoons plus 1 teaspoon (or 1 cup plus 5 tablespoons plus 1 teaspoon).
Q: How do I halve 2/3 cup?
Half of 2/3 cup equals 1/3 cup, which is 5 tablespoons plus 1 teaspoon.
Q: Does 2/3 cup mean the same thing in metric recipes?
Metric recipes typically use milliliters or grams, not cups. If a metric recipe uses cups, it likely uses the US standard cup (240 mL), making 2/3 cup equal to 160 mL. Some British or Australian recipes use a 250 mL cup, in which case 2/3 cup equals approximately 167 mL.
Written by Maya Carter, meal prep writer and home cook at BeefSteakVeg. Last updated July 2026.
Maya Carter | Editorial Policy | Affiliate Disclosure
Note: Volume-to-weight conversions are approximations based on standard U.S. measurement conventions. Ingredient density varies by brand, humidity, and packing method. For precision baking, a kitchen scale is more reliable than volume measurements.
