US Cup to US Fluid Ounce Converter

1 US Cup = 8 US Fluid Ounce

To convert us cups to us fluid ounces, multiply by 8.

Conversions between US Cup (cup) and US Fluid Ounce (fl oz) are essential in the cooking (volume) category. This tool provides a quick, free, and accurate way to convert us cups to us fluid ounces for academic, professional, or personal calculations. Check the detailed conversion table and formula explanation below for more context.

Cooking (Volume) Converter

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Formula

fl oz = cup × 8

To convert US Cup to US Fluid Ounce, use the formula displayed above.

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US Cup to US Fluid Ounce: Quick Reference Table

US Cup (cup) US Fluid Ounce (fl oz)
0.001 0.008
0.01 0.08
0.1 0.8
0.5 4
1 8
2 16
5 40
10 80
25 200
50 400
100 800
250 2000
500 4000
1000 8000

cup to fl oz Formula and Examples

Direct Formula fl oz = cup × 8
Inverse Formula cup = fl oz × 0.125
Mental Math Shortcut

Multiply the value by roughly 8 to calculate the equivalent amount in your head.

Common US Cup to US Fluid Ounce Calculations

  • 5 cup = 40 fl oz
  • 10 cup = 80 fl oz
  • 50 cup = 400 fl oz
  • 100 cup = 800 fl oz
  • 500 cup = 4000 fl oz

How to Convert US Cup to US Fluid Ounce

How many us fluid ounces are in a us cup?
1 US Cup (cup) is equal to 8 US Fluid Ounce (fl oz). To convert us cups to us fluid ounces, multiply your value by 8.
How do I convert us cup to us fluid ounce?
To convert US Cup to US Fluid Ounce, use the formula: US Fluid Ounce = US Cup × 8. For example, 5 cup = 40 fl oz.
What is the formula for cup to fl oz?
The formula is: fl oz = cup × 8. This is based on the exact SI conversion factor. Use our calculator above to convert any value instantly.