Cups to Ounces Converter
Convert US cups to fluid ounces for cooking, baking, and beverage measurement.
How It Works
Formula: US cup to fl oz = value × 8
Example: 1 US cup = 8 fl oz
Note: 1 US cup equals 8 fluid ounces, the standard volume relationship in American recipes.
Common Uses
Rounding Rule
Rounded to 2 decimal places
Error Margin
±0.01 fl oz
Precision Guidance
For cooking, round to 1 decimal. For mixology, keep 2 decimals.
Common Mistakes
Fluid ounces measure volume; weight ounces differ. Do not swap them when a recipe gives weights.
Frequently Asked Questions
What is 1 cup in fluid ounces?
1 US cup equals 8 fluid ounces (1 cup = 8 fl oz = 236.59 mL).
How do I convert cups to ounces?
Multiply the cup value by 8. For example, 1.5 cups × 8 = 12 fl oz.
Is this fluid ounces or weight ounces?
This converts to fluid ounces (volume), not avoirdupois ounces (weight). They differ for most ingredients.
How many cups in 16 oz?
16 fl oz equals 2 US cups.
Deep Dive Guide
Cups to Ounces: US Liquid Conversion for Cooking and Baking
Convert cups to fluid ounces accurately for US recipes, cooking, and liquid measurements. 1 cup equals 8 fluid ounces.
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Last Updated 2026 | This converter was reviewed for accuracy