How Many Ounces in a Cup

Quick reference for kitchen conversions

⚡Quick Answer

1 cup = 8 fluid ounces (US). For dry ingredients, weight varies by ingredient (flour ~4.5 oz, sugar ~7 oz).

1 US cup = 8 fluid ounces. This is standard for all liquids like water, milk, oil.

💡Fluid ounces measure volume, not weight.

1/2 cup = 4 oz, 1/4 cup = 2 oz, 1/3 cup = 2.67 oz.

💡Keep a conversion chart in your kitchen!

Dry ingredients have different weights per cup. Flour: ~4.5 oz, Sugar: ~7 oz, Butter: ~8 oz.

💡For baking accuracy, use a kitchen scale.

1 US cup = 237 ml (often rounded to 240 ml). 1 metric cup = 250 ml.

💡UK cups can differ slightly from US cups.

Technically they hold the same, but liquid cups have a pour spout and extra space. For accuracy, use the right type.

Spray the cup with oil first, or use weight measurements for more accuracy.

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