Home›Cooking›Fluid Ounces to Cups
Cooking

Fluid Ounces to Cups

Convert fl oz to cup quickly with this free online calculator. The page explains the conversion rule, gives practical examples and provides a quick reference table.

ADVERTISEMENT
CONVERTED RESULT—
Decimal places
CONVERSION RULE

1 fl oz equals approximately 0.125 cup.

How to use the Fluid Ounces to Cups

  1. Enter the number you want to convert.
  2. Confirm the source unit shown beside the input.
  3. Choose decimal precision if you need more or less detail.
  4. Read the converted result.
  5. Copy the result when you need to use it elsewhere.

How the conversion works

1 fl oz equals approximately 0.125 cup.

For a simple fixed-factor conversion, the calculator multiplies the entered value by the stated factor. Temperature scales and certain specialized tools use their specific mathematical relationship instead.

ADVERTISEMENT

Common fl oz to cup conversions

fl ozcup
1 fl oz0.125 cup
2 fl oz0.25 cup
5 fl oz0.625 cup
10 fl oz1.25 cup
20 fl oz2.5 cup
50 fl oz6.25 cup

Example

For example, entering 1 fl oz gives approximately 0.125 cup using the rule above. Change the input to test your own value.

Frequently asked questions

The Fluid Ounces to Cups converts a value from fl oz to cup using the conversion relationship described on this page.
Enter your value, review the source and destination units, choose the decimal precision and read or copy the result.
1 fl oz equals approximately 0.125 cup.
Use enough precision for your purpose. Everyday estimates usually need fewer decimal places; technical work may require more.
It can be a useful reference calculation, but safety-critical, regulated, contractual or specialized work should be verified against the applicable authoritative standard.

Accuracy note: This calculator is a practical reference. For regulated, safety-critical or specialized work, verify the result against the applicable standard.

Page reviewed: August 24, 2026.