How many ounces in 1/3 cup?

1/3 cup = 2.67 fl oz

5.33 Tbsp · 16 tsp · 79 mL

Measure with: 1/3 cup · or spoons only: 5 Tbsp + 1 tsp

Converter

1/3 cup = 2.67 fl oz

Fluid ounces
2.67 fl oz
Cups
1/3 (0.333)
Tablespoons
5.33
Teaspoons
16
Milliliters
79 mL
Measure with
1/3 cup
Other cup standards

US cups: 0.333 · nutrition-label cups (240 mL): 0.329 · metric cups (250 mL): 0.315 · UK fluid ounces: 2.78

US customary cup = 236.6 mL

With no 1/3 cup on hand, the spoon route is 5 level tablespoons plus 1 teaspoon. Many cooks stop at 5 Tbsp, which leaves you about 5 mL short. That matters more in a small batch of cookies than in a pot of soup.

Three 1/3 cups make a full cup, and four make 1 1/3 cups, so this one measure can cover several common amounts by itself.

For butter, cut just past the 5 Tbsp mark on the stick to add the extra teaspoon. By weight, 1/3 cup of spooned all-purpose flour is about 40 g (1.41 oz) and granulated sugar about 66 g (2.33 oz). Halving it? Go to half of 1/3 cup.

A 1/3 cup measure holds the same as 5 tablespoons plus 1 teaspoon 1/3 cup = TbspTbspTbspTbspTbsp + tsp
Illustration: no 1/3 cup measure? Five level tablespoons plus one level teaspoon hold exactly the same.
Cups to fluid ounces, tablespoons and mL
CupsFluid ouncesTablespoonsTeaspoonsmL
1/8 cup1 fl oz2630
1/6 cup1.33 fl oz2.67839
1/4 cup2 fl oz41259
1/3 cup2.67 fl oz5.331679
3/8 cup3 fl oz61889
1/2 cup4 fl oz824118
2/3 cup5.33 fl oz10.6732158
3/4 cup6 fl oz1236177
7/8 cup7 fl oz1442207
1 cup8 fl oz1648237
1 1/4 cups10 fl oz2060296
1 1/3 cups10.67 fl oz21.3364315
1 1/2 cups12 fl oz2472355
2 cups16 fl oz3296473
2 1/2 cups20 fl oz40120591
3 cups24 fl oz48144710
4 cups32 fl oz64192946
5 cups40 fl oz802401,183
6 cups48 fl oz962881,420
8 cups64 fl oz1283841,893
16 cups128 fl oz2567683,785
Cup fractions in tablespoons and teaspoons
CupsTablespoonsTeaspoonsWith spoons only
1/8 cup262 Tbsp
1/6 cup2.6782 Tbsp + 2 tsp
1/4 cup4124 Tbsp
1/3 cup5.33165 Tbsp + 1 tsp
3/8 cup6186 Tbsp
1/2 cup8248 Tbsp
5/8 cup103010 Tbsp
2/3 cup10.673210 Tbsp + 2 tsp
3/4 cup123612 Tbsp
7/8 cup144214 Tbsp
1 cup164816 Tbsp

What 1/3 cup weighs

Weight of 1/3 cup by ingredient
Ingredient1/3 cupHow measured
All-purpose flour40 g · 1.41 ozspooned into the cup and leveled
Granulated sugar66 g · 2.33 ozscooped and leveled
Brown sugar (packed)71 g · 2.5 ozpacked firmly
Butter76 g · 2.67 ozcut at the Tbsp marks on the wrapper (1 stick = 1/2 cup)
Rolled oats30 g · 1.05 ozscooped and leveled
Water79 g · 2.77 ozliquid measuring cup

Questions

How many spoons is 1/3 cup?

5 tablespoons plus 1 teaspoon, or 16 teaspoons if you use only the small spoon.

Is 1/3 cup the same as 5 tablespoons?

Close, but 5 Tbsp is one teaspoon shy. Add 1 tsp to get exactly 1/3 cup.

How many ounces is 1/3 cup?

2.67 fl oz, or 2 2/3 fl oz. For dry ingredients the weight varies: 1/3 cup of flour is about 1.41 oz by weight.

Sources: US customary units: NIST Handbook 44 · ingredient weights: King Arthur Baking ingredient weight chart. How we calculate.