What Is a Third of 1⅔ Cups?
A third of 1⅔ cups is 5/9 cup.
Measure it as: 1/2 cup + 2 tsp + 1/2 tsp + 1/8 tsp (rounded to the nearest measurable spoon — level it off slightly generously.)
How to measure 5/9 cup
- With standard cups & spoons: 1/2 cup + 2 tsp + 1/2 tsp + 1/8 tsp — rounded to the nearest measurable spoon — level it off slightly generously.
- By volume: 131 ml, or 4.44 fluid ounces — handy if you have a measuring jug.
- By weight (most accurate): see the gram table below for common ingredients.
Here's the math: 1⅔ cups is 26⅔ tablespoons. Take a third of that and you get 8⅞ tablespoons, which is 5/9 cup. Working in spoons instead of cup fractions is the trick professional bakers use to scale recipes without special equipment.
5/9 cup in grams
Volume-to-weight depends on the ingredient — a cup of flour weighs far less than a cup of honey. For 5/9 cup:
| Ingredient | 5/9 cup weighs about |
|---|---|
| All-purpose flour | 67 g |
| Granulated sugar | 111 g |
| Brown sugar (packed) | 122 g |
| Powdered sugar | 67 g |
| Butter | 126 g |
| Milk | 133 g |
| Water | 132 g |
| Vegetable oil | 121 g |
| Honey | 189 g |
Recipe Thirds Chart: nearby amounts
| Original | A third | Measure it as |
|---|---|---|
| 1¼ cups | 5/12 cup | 1/3 cup + 1 tbsp + 1 tsp |
| 1⅓ cups | 4/9 cup | 1/3 cup + 1 tbsp + 2 tsp + 1/4 tsp + 1/8 tsp |
| 1½ cups | ½ cup | 1/2 cup |
| 1⅔ cups | 5/9 cup | 1/2 cup + 2 tsp + 1/2 tsp + 1/8 tsp |
| 1¾ cups | 7/12 cup | 1/3 cup + 4 tbsp |
| 2 cups | ⅔ cup | 2/3 cup |
| 2¼ cups | ¾ cup | 3/4 cup |
See the full recipe thirds chart →
Frequently asked questions
What is a third of 1⅔ cups in milliliters?
A third of 1⅔ cups is about 131 ml (4.44 fl oz).
What's the easiest way to measure 5/9 cup without special cups?
Use standard measures: 1/2 cup + 2 tsp + 1/2 tsp + 1/8 tsp. Rounded to the nearest measurable spoon — level it off slightly generously.