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US fluid ounce to US cup Converter

Type a value — the answer appears instantly. 1 fl oz = 0.125 cup.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From unit

To unit
Result

0.125 US cups

= 0.0295735 L= 29.5735 ml

equals 0.125 US cups

Formula: cup = fl oz × 0.125

US fluid ounce to US cup formula

cup = fl oz × 0.125

Convert 5 US fluid ounces to US cups

  1. Start with 5 US fluid ounces.
  2. Multiply by the conversion factor: 5 × 0.125 = 0.625.
  3. So 5 fl oz = 0.625 cup.

US fluid ounce to US cup conversion table

US fluid ounce to US cup conversion table
US fluid ounces (fl oz)US cups (cup)
0.01 fl oz0.00125 cup
0.1 fl oz0.0125 cup
0.25 fl oz0.03125 cup
0.5 fl oz0.0625 cup
1 fl oz0.125 cup
2 fl oz0.25 cup
3 fl oz0.375 cup
4 fl oz0.5 cup
5 fl oz0.625 cup
6 fl oz0.75 cup
7 fl oz0.875 cup
8 fl oz1 cup
9 fl oz1.125 cup
10 fl oz1.25 cup
15 fl oz1.875 cup
20 fl oz2.5 cup
25 fl oz3.125 cup
30 fl oz3.75 cup
40 fl oz5 cup
50 fl oz6.25 cup
75 fl oz9.375 cup
100 fl oz12.5 cup
250 fl oz31.25 cup
500 fl oz62.5 cup
1,000 fl oz125 cup
5,000 fl oz625 cup
10,000 fl oz1,250 cup

Unit definitions

What is a US fluid ounce?

The US fluid ounce is one 128th of a US gallon, about 29.57 millilitres. It is the customary unit for beverages and liquid packaging in the United States. It is slightly larger than the imperial (UK) fluid ounce.

What is a US cup?

The US customary cup is one sixteenth of a US gallon, about 236.59 millilitres. It is the standard volume measure in American home cooking and baking. It equals eight US fluid ounces.

Frequently asked questions

How many US cups are in one US fluid ounce?

One US fluid ounce equals 0.125 US cups (1 fl oz = 0.125 cup).

How do I convert US fluid ounces to US cups?

Multiply the value in US fluid ounces by 0.125. For example, 10 fl oz × 0.125 = 1.25 cup.

Which is bigger — a US fluid ounce or a US cup?

A US cup is bigger: one US cup contains 8 US fluid ounces.

Is this US fluid ounce to US cup converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.