US Cups to Fluid Ounces
Converter

Convert us cups to fluid ounces quickly and accurately using this free online converter

US cup to fl oz — Quick Reference

Used in cooking, beverages, and liquid measurements.

💡 The US uses cups, fluid ounces, and gallons; metric countries use liters and milliliters.

Formula

fl oz = US cup × 8

Example: 1 US cup × 8 = 8 fl oz

When to Use fl oz

Use liters for international recipes; cups/gallons for US recipes.

Common uses: cooking, beverages, and liquid containers.

Frequently Asked Questions

How do I convert US cup to fl oz?

Multiply the value in US Cups by 8. For example: 10 US cup = 80 fl oz.

When should I use Fluid Ounces instead of US Cups?

Use liters for international recipes; cups/gallons for US recipes.

Is this converter accurate?

Yes. We use internationally recognized conversion factors, updated to current standards.

US Cups to Fluid Ounces conversion table

US Cups (US cup)Fluid Ounces (fl oz)
1 US cup8 fl oz
2 US cup16 fl oz
5 US cup40 fl oz
10 US cup80 fl oz
20 US cup160 fl oz
50 US cup400 fl oz
100 US cup800 fl oz
500 US cup4000 fl oz
1000 US cup8000 fl oz

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