Understanding kitchen measurements is the foundation of consistent cooking and successful baking. Consider this: the short answer is that 2/3 cup equals 10 tablespoons plus 2 teaspoons. In decimal terms, that is approximately 10.When a recipe calls for 2/3 cup, knowing exactly how that translates into tablespoons saves time, reduces dirty dishes, and ensures your ratios are precise. 67 tablespoons. While the math is simple, the practical application requires a bit of nuance depending on whether you are measuring liquids or dry ingredients.
The Basic Conversion Math
To understand where the number comes from, you only need to remember one standard US conversion: 1 cup equals 16 tablespoons. From there, the calculation is straightforward multiplication Which is the point..
$ \frac{2}{3} \text{ cup} \times 16 \text{ tablespoons/cup} = \frac{32}{3} \text{ tablespoons} = 10 \frac{2}{3} \text{ tablespoons} $
Since most measuring spoon sets do not include a "2/3 tablespoon" measure, you must break that remainder down further. There are 3 teaspoons in 1 tablespoon. Because of this, two-thirds of a tablespoon equals exactly 2 teaspoons.
The Practical Breakdown:
- 10 Tablespoons
- Plus 2 Teaspoons
This is the most accurate way to measure 2/3 cup using standard spoon sets without relying on a liquid measuring cup or a dry 2/3 cup measure Simple, but easy to overlook..
Why Precision Matters: Cooking vs. Baking
The level of precision required changes drastically depending on what you are making.
In Cooking (Savory Applications)
If you are making a soup, stew, marinade, or sauce, the 10 tablespoons + 2 teaspoons measurement is a guideline, not a law. If you scoop 10 tablespoons and eyeball a little extra, the result will likely be indistinguishable from the intended recipe. Cooking is forgiving; ratios have wiggle room Most people skip this — try not to..
In Baking (The Science of Ratios)
Baking is chemistry. The ratio of flour to liquid, fat to sugar, and leavener to acid determines structure, crumb, and rise. Approximating 2/3 cup as "about 11 tablespoons" in a cake or bread recipe can lead to a dense texture, a collapsed center, or excessive spreading in cookies. In professional baking, weight (grams) is preferred over volume (cups/spoons) for this exact reason. That said, if you are working with volume measures, hitting that 10 Tbsp + 2 tsp mark is non-negotiable for consistent results.
Measuring Dry Ingredients vs. Liquid Ingredients
The volume is the same (10 Tbsp + 2 tsp), but the tools and technique differ.
Measuring Liquids (Oil, Water, Milk, Honey)
Use a liquid measuring cup (usually glass or clear plastic with a spout and handle) if you have the 2/3 cup mark. If you are using spoons:
- Use a standard tablespoon measure.
- Fill it to the brim (the meniscus should sit level with the rim).
- Repeat 10 times.
- Switch to a teaspoon measure and fill 2 times. Tip: For sticky liquids like honey or molasses, spray the spoon with non-stick spray first. The liquid will slide right out, giving you a more accurate volume.
Measuring Dry Ingredients (Flour, Sugar, Cocoa, Spices)
Never scoop directly with the measuring spoon or cup. Scooping compacts the ingredient, yielding up to 25% more product than the recipe intends.
- Fluff the ingredient in its container with a fork or whisk.
- Spoon it lightly into the tablespoon measure until it is overflowing.
- Level it off with a straight edge (the back of a knife or a bench scraper).
- Repeat for all 10 tablespoons.
- Use the teaspoon measure for the final 2 teaspoons, using the same spoon-and-level method.
Note on Brown Sugar: This is the exception. Brown sugar should be packed firmly into the spoon or cup measure until it holds the shape of the tool when turned out Less friction, more output..
Quick Reference Conversion Chart
Keeping a mental (or printed) chart nearby eliminates the need for mental math in the middle of a recipe Easy to understand, harder to ignore..
| Cup Measurement | Tablespoons (Tbsp) | Teaspoons (tsp) | Fluid Ounces (fl oz) | Milliliters (mL) |
|---|---|---|---|---|
| 1/8 cup | 2 Tbsp | 0 tsp | 1 fl oz | 30 mL |
| 1/4 cup | 4 Tbsp | 0 tsp | 2 fl oz | 60 mL |
| 1/3 cup | 5 Tbsp | 1 tsp | 2.67 fl oz | 79 mL |
| 1/2 cup | 8 Tbsp | 0 tsp | 4 fl oz | 118 mL |
| 2/3 cup | 10 Tbsp | 2 tsp | 5.33 fl oz | 158 mL |
| 3/4 cup | 12 Tbsp | 0 tsp | 6 fl oz | 177 mL |
| 1 cup | 16 Tbsp | 0 tsp | 8 fl oz | 237 mL |
Common Scenarios Where This Conversion Saves the Day
1. The Missing 2/3 Cup Measure
Standard nested dry measuring cup sets often include 1/4, 1/3, 1/2, and 1 cup. The 2/3 cup and 3/4 cup measures are frequently sold separately or omitted entirely. Knowing the tablespoon equivalent means you never have to guess or "fill the 1/3 cup twice" (which doubles your margin for error).
2. Halving or Doubling Recipes
Scaling recipes often creates awkward fractions.
- Half of 2/3 cup: 1/3 cup (5 Tbsp + 1 tsp).
- Double 2/3 cup: 1 1/3 cups (1 cup + 5 Tbsp + 1 tsp).
- Triple 2/3 cup: 2 cups. Knowing the tablespoon baseline makes scaling any fraction easier because you can simply multiply the 10.67 tablespoons by your scaling factor.
3. Measuring Butter Sticks
In the US, butter is sold in 1/2 cup sticks (8 tablespoons). 2/3 cup of butter is 1 full stick (8 Tbsp) plus 2 tablespoons and 2 teaspoons (roughly 2 2/3 tablespoons off a second stick). Most butter wrappers have tablespoon markings printed on the paper, making this very fast to execute without dirtying a single spoon Small thing, real impact..
The Metric Advantage: Why Grams Win
While the 10 Tbsp + 2 tsp conversion is perfect for US customary units, the global standard (and professional standard) is weight in grams. Volume measures are inherently variable; a cup of sifted flour weighs significantly less than a cup of packed flour.
If you have a digital kitchen scale (highly recommended for bakers), here are
