How Many Ounces in a Cup?

There are 8 fluid ounces in a US cup. This is the standard measurement used in American recipes for liquids.

How many ounces in a cup? — see the answer and conversion table below.

Use the related converter below for custom values.

Formula

Answer: There are 8 fluid ounces in a US cup. This is the standard measurement used in American recipes for liquids.

Example

Question: How many ounces in a cup? Answer: There are 8 fluid ounces in a US cup. This is the standard measurement used in American recipes for liquids.

How to Use

  1. Read the direct answer at the top of the page
  2. Check the conversion table for common values
  3. Use the related converter for custom values
  4. Browse the FAQ for common follow-up questions

Frequently Asked Questions

How many dry ounces in a cup?

It depends on the ingredient. 1 cup of flour is about 4.5 oz, 1 cup of sugar is about 7 oz, 1 cup of butter is 8 oz. Use a kitchen scale for accuracy.

Is a fluid ounce the same as a dry ounce?

No. A fluid ounce measures volume (29.57 ml), while a dry ounce measures weight (28.35 g). They are different units.

How many ounces in a cup of water?

There are 8 fluid ounces in a cup of water, which weighs 8.345 ounces (236.6 grams).

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Author: Calczy Editorial Team Reviewed by: Calczy Editorial Team Last updated: 2026-09-16

This page was reviewed for accuracy by the Calczy editorial team. Our editorial process follows our editorial policy to ensure reliable, up-to-date conversion tools and reference content.