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Cup (US) to Fluid Ounce (US) Converter

Convert Cup (US) to Fluid Ounce (US) instantly — live results with exact conversion factors.

8 fl oz

Answer

1 cup (us) = 8 fluid ounces (us). To convert cup to fl oz, multiply by 8.

Quick Reference Table

Cup (US) (cup) Fluid Ounce (US) (fl oz)
1 8
2 16
5 40
10 80
20 160
50 400
100 800
250 2000
500 4000
1000 8000

Formula

Convert Cup (US) (cup) to Fluid Ounce (US) (fl oz) using the relationship: 

fl oz = cup × 8

How to Convert

  1. Take the value in cups (us) (cup).
  2. Multiply it by 8 (the conversion factor from cup to fl oz).
  3. The result is the equivalent value in fluid ounces (us) (fl oz).
  4. Example: 1 cup = 8 fl oz.

Reverse Conversion

Need it the other direction? Fluid Ounce (US) to Cup (US) conversion.

All Volume Conversions

See the full list of Volume conversions.

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FAQ

▸ How many fluid ounces (us) are in 1 cup (us)?

1 Cup (US) equals 8 fluid ounces (us). Multiply by 8 to convert cup to fl oz.

▸ What is the formula to convert cup (us) to fluid ounce (us)?

Multiply the value in cups (us) by 8 to get fluid ounces (us). Formula: fl oz = cup × 8.

▸ How do I convert cups (us) to fluid ounces (us) easily?

Enter your value in the converter at the top of this page — the fluid ounces (us) result updates live as you type. You can also multiply by 8 directly.