3.09 Ounces to Cups

3.09 fl oz = 0.38625 cup

Calculation: cup = 3.09 fl oz × 0.125 = 0.38625 cup

Ounce to Cup Converter

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How much is 3.09 fl oz?

91 mL (3.1 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

What does 3.09 fl oz look like?

Illustration of a rocks glass
91 mL (3.1 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

3.09 fl oz on the cup scale

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3.09 fl oz = 0.3863 cup

How to Convert Ounce to Cup

1 ounce = 18 cups

Cup = Ounce × 18

Example: 3.09 fl oz × 18 = 0.38625 cup

Reverse Conversion

To convert cups back to ounces:

  • Remember, 1 cup equals 8 ounces.
  • To convert 0.38625 cup to fl oz, multiply 0.38625 x 8, resulting in 3.09 fl oz.

3.09 fl oz is also equal to:

  • 91.382 milliliter
  • 0.091382 liter
  • 0.19313 pint
  • 0.096563 quart

Frequently Asked Questions

How much is 3.09 ounces in cups?

3.09 ounces equals 0.38625 cups. This is calculated by multiplying 3.09 by the conversion factor 0.125.

What does 3.09 ounces look like in cups?

3.09 ounces (0.38625 cups) is a shot glass or a few tablespoons.

How do you calculate 3.09 ounces to cups?

Multiply 3.09 by the conversion factor 0.125. The calculation is 3.09 × 0.125 = 0.38625 cups. This factor is defined by international measurement standards.

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3.09 ounces = 0.38625 cups
3.09 ounces = 0.38625 cups — conversion chart

Nearby Conversions

0.09 ounces0.01125 cups 1.09 ounces0.1363 cups 2.09 ounces0.2613 cups 4.09 ounces0.5113 cups 5.09 ounces0.6363 cups 6.09 ounces0.7613 cups 7.09 ounces0.8863 cups 8.09 ounces1.011 cups 9.09 ounces1.136 cups 10.09 ounces1.261 cups 11.09 ounces1.386 cups 12.09 ounces1.511 cups 13.09 ounces1.636 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.