Kitchen conversion
how many ounces in a cup of water
1 oz water = 0.1198 cup.
Ounce → Cup · water
1 oz water → Cup
1 oz water = 0.1198 cup. Use the calculator below to change the amount, switch units, or convert a full recipe list while cooking.
Because ounce and cup span volume and weight, this page uses water density (~236.6g per US cup). Other ingredients will convert differently.
Tip: for baking, weighing in grams is more consistent than cups. Convert once, then scale the recipe up or down without re-measuring every spoon.
FAQ
How Many Ounces In A Cup Of Water?
1 oz water = 0.1198 cup.
Is this oz to cup conversion exact?
Volume ↔ weight depends on ingredient density. We use common US baking averages (e.g. flour ≈ 125g per cup).
US cup or metric cup?
This site uses the US legal cup (240ml-class cooking cup ≈ 236.588 ml) common in American recipes.
Are ounces weight or fluid ounces?
“Ounces in a cup” for liquids is usually fluid ounces (8 fl oz per cup). Weight ounces need an ingredient.