How Many Fl Oz in a Cup?

There are 8 fluid ounces (fl oz) in a US cup. This is the standard liquid measurement used in American recipes.

How many fl oz 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 (fl oz) in a US cup. This is the standard liquid measurement used in American recipes.

Example

Question: How many fl oz in a cup? Answer: There are 8 fluid ounces (fl oz) in a US cup. This is the standard liquid measurement used in American recipes.

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

Is fl oz the same as oz?

No. fl oz (fluid ounce) measures volume (29.57 ml). oz (ounce) measures weight (28.35 g). They are different for most substances.

How many fl oz in a pint?

There are 16 fl oz in a US pint and 20 fl oz in a UK imperial pint.

How many ml in a fl oz?

There are 29.57 ml in 1 US fluid ounce and 28.41 ml in 1 UK fluid ounce.

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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.