4.05 Ounces to Cups

4.05 fl oz = 0.50625 cup

Calculation: cup = 4.05 fl oz × 0.125 = 0.50625 cup

Ounce to Cup Converter

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How much is 4.05 fl oz?

120 mL (4.1 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

What does 4.05 fl oz look like?

Illustration of a rocks glass
120 mL (4.1 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

4.05 fl oz on the cup scale

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4.05 fl oz = 0.5063 cup

How to Convert Ounce to Cup

1 ounce = 18 cups

Cup = Ounce × 18

Example: 4.05 fl oz × 18 = 0.50625 cup

Reverse Conversion

To convert cups back to ounces:

  • Remember, 1 cup equals 8 ounces.
  • To convert 0.50625 cup to fl oz, multiply 0.50625 x 8, resulting in 4.05 fl oz.

4.05 fl oz is also equal to:

  • 119.77 milliliter
  • 0.11977 liter
  • 0.25313 pint
  • 0.12656 quart

Frequently Asked Questions

How much is 4.05 ounces in cups?

4.05 ounces equals 0.50625 cups. This is calculated by multiplying 4.05 by the conversion factor 0.125.

What does 4.05 ounces look like in cups?

4.05 ounces (0.50625 cups) is a small cup of liquid — half a measuring cup.

How do you calculate 4.05 ounces to cups?

Multiply 4.05 by the conversion factor 0.125. The calculation is 4.05 × 0.125 = 0.50625 cups. This factor is defined by international measurement standards.

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4.05 ounces = 0.50625 cups
4.05 ounces = 0.50625 cups — conversion chart

Nearby Conversions

0.05 ounces0.00625 cups 1.05 ounces0.1313 cups 2.05 ounces0.2563 cups 3.05 ounces0.3813 cups 5.05 ounces0.6313 cups 6.05 ounces0.7563 cups 7.05 ounces0.8813 cups 8.05 ounces1.006 cups 9.05 ounces1.131 cups 10.05 ounces1.256 cups 11.05 ounces1.381 cups 12.05 ounces1.506 cups 13.05 ounces1.631 cups 14.05 ounces1.756 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.