4 Ounces to Cups

4 fl oz = 0.5 cup

Calculation: cup = 4 fl oz × 0.125 = 0.5 cup

Ounce to Cup Converter

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How much is 4 fl oz?

118 mL (4.0 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

What does 4 fl oz look like?

Illustration of a rocks glass
118 mL (4.0 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

4 fl oz on the cup scale

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4 fl oz = 0.5 cup

How to Convert Ounce to Cup

1 ounce = 18 cups

Cup = Ounce × 18

Example: 4 fl oz × 18 = 12 cup

Reverse Conversion

To convert cups back to ounces:

  • Remember, 1 cup equals 8 ounces.
  • To convert 12 cup to fl oz, multiply 12 x 8, resulting in 4 fl oz.

4 fl oz is also equal to:

Frequently Asked Questions

How much is 4 ounces in cups?

4 ounces equals 0.5 cups. This is calculated by multiplying 4 by the conversion factor 0.125.

What does 4 ounces look like in cups?

4 ounces (0.5 cups) is a small cup of liquid — half a measuring cup.

How do you calculate 4 ounces to cups?

Multiply 4 by the conversion factor 0.125. The calculation is 4 × 0.125 = 0.5 cups. This factor is defined by international measurement standards.

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4 ounces = 0.5 cups
4 ounces = 0.5 cups — conversion chart

Nearby Conversions

1 ounce0.125 cups 2 ounces0.25 cups 3 ounces0.375 cups 5 ounces0.625 cups 6 ounces0.75 cups 7 ounces0.875 cups 8 ounces1 cup 9 ounces1.125 cups 10 ounces1.25 cups 11 ounces1.375 cups 12 ounces1.5 cups 13 ounces1.625 cups 14 ounces1.75 cups

For general conversions between ounces and cups, see the ounces to cups converter.

Also convert Ounces to:

Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.