Caster Sugar Cups to Ounces (Weight)
1 US cup of caster sugar weighs 6.702058 ounces by weight.
Direct Answer
1 US cup of Caster Sugar equals 6.702058 oz (weight)
ounces (weight) = cups × 6.702058
2 cups = 13.404116 oz
Converter Calculator
6.702058 Ounces
SwitchExplanation
This page answers the kitchen question in weight terms: how much 1 US cup of caster sugar weighs in ounces. It converts cup volume into weight ounces using one ingredient-specific factor instead of a generic chart.
It is measuring mass, not fluid ounces. That is especially useful for baking, syrups, and dessert prep where sweetness and structure depend on repeatable weight. The mirror page uses the same ounce-per-cup conversion in reverse so both directions stay aligned.
Common Conversion Values
| Cups | Ounces |
|---|---|
| 1/4 | 1.675515 |
| 1/3 | 2.233796 |
| 1/2 | 3.351029 |
| 1 | 6.702058 |
| 1 1/2 | 10.053087 |
| 2 | 13.404116 |
| 3 | 20.106174 |
Frequently Asked Questions
How many ounces are in 1 cup of Caster Sugar?
1 US cup of Caster Sugar is 6.702058 ounces by weight based on the density reference for Caster Sugar.
Is this weight ounces or fluid ounces?
It is weight ounces. This page converts cup volume into ingredient mass, not fluid ounces.
Does crystal size or packing change the result for Caster Sugar?
Caster Sugar uses one fixed reference basis here, but crystal size, moisture, and caking can shift how much fits in a spoon or cup. That matters more with sugars and sweeteners than with a purely liquid measure.
How many ounces are in 2 cups of Caster Sugar?
2 cups of Caster Sugar are 13.404116 oz (weight) using 6.702058 oz per cup.
How do I convert Caster Sugar ounces back to cups?
Use the mirror Ounces To Cups page; divide ounces (weight) by 6.702058 to return cups.