One-third cup is 5 tablespoons plus 1 teaspoon. That is also 16 teaspoons, or 5 1/3 tablespoons. Three of those 1/3-cup measures make 1 cup.

Quick conversion
| Measure | Equals |
|---|---|
| 1/3 cup | 5 tablespoons + 1 teaspoon |
| 1/3 cup | 16 teaspoons |
| 1/3 cup | about 79 milliliters, or 2 2/3 fluid ounces |
| 1 cup | three 1/3 cups |
| 1 quart | twelve 1/3 cups |
| 1 gallon | 48 one-third cups |
A U.S. cup is 16 tablespoons, so one-third of a cup is 16 ÷ 3, which is 5 tablespoons and 1 teaspoon. Related guides: tablespoons in a cup, teaspoons in a tablespoon, cups in a gallon and the kitchen measurement conversion chart.
How to measure 1/3 cup with spoons
If your 1/3-cup measure is missing, spoon out 5 level tablespoons and 1 level teaspoon. For 2/3 cup, double that: 10 tablespoons plus 2 teaspoons, or two 1/3-cup fills. Level the spoons; a heaping tablespoon is not the same as a level one.

Scaling a recipe that uses 1/3 cup
Tripling a 1/3-cup ingredient turns it into 1 cup, which is easier to measure in a liquid or dry cup. For a gallon-size batch, 48 of those 1/3-cup scoops equal 16 cups. In milliliters, 1/3 cup is about 79 mL, a little under 80.
Butter is a handy cross-check in U.S. kitchens: one stick is 8 tablespoons, or 1/2 cup, so half a stick is 1/4 cup. For 1/3 cup of butter, use 5 tablespoons plus 1 teaspoon, or weigh about 76 grams. Keep the same level-spoon habit you use for dry ingredients.
Frequently asked questions
How many tablespoons are in 1/3 cup?
There are 5 tablespoons plus 1 teaspoon in 1/3 cup. That is the same as 16 teaspoons, or 5 1/3 tablespoons.
How many 1/3 cups are in a cup?
Three 1/3 cups make 1 cup. A 2/3-cup amount is two of those 1/3-cup measures.
How many 1/3 cups are in a gallon?
There are 48 one-third cups in a U.S. gallon, because a gallon is 16 cups and 16 × 3 = 48.
Helpful kitchen tools
- OXO Good Grips Stainless Steel Measuring Cups and Spoons, 8-Piece Set — Dry cups (1/4, 1/3, 1/2 and 1 cup) and spoons with etched marks.
- OXO Good Grips 2-Cup and 4-Cup Glass Measuring Cup Set — A 2-cup and a 4-cup liquid cup with U.S. and metric marks.
- Kitchen Conversion Chart Magnet (AKS Magnets) — An 11-by-8.5-inch fridge magnet for volume and weight conversions.
- OXO Good Grips 11-Pound Digital Kitchen Food Scale — Weighs in grams and ounces, with a tare (zero) button.
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