20 Ounces to Cups

20 fl oz = 2.5 cup

Calculation: cup = 20 fl oz × 0.125 = 2.5 cup

Ounce to Cup Converter

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How much is 20 fl oz?

591 mL (20 fl oz) is about a standard wine bottle (750 mL / 25.4 fl oz).

What does 20 fl oz look like?

Illustration of a wine bottle
591 mL (20 fl oz) is about a standard wine bottle (750 mL / 25.4 fl oz).

20 fl oz on the cup scale

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20 fl oz = 2.5 cup

How to Convert Ounce to Cup

1 ounce = 18 cups

Cup = Ounce × 18

Example: 20 fl oz × 18 = 2 12 cup

Reverse Conversion

To convert cups back to ounces:

  • Remember, 1 cup equals 8 ounces.
  • To convert 2 12 cup to fl oz, multiply 2 12 x 8, resulting in 20 fl oz.

20 fl oz is also equal to:

Frequently Asked Questions

How much is 20 ounces in cups?

20 ounces equals 2.5 cups. This is calculated by multiplying 20 by the conversion factor 0.125.

What does 20 ounces look like in cups?

20 ounces (2.5 cups) is a pint to a quart — a large glass or a small bottle.

How do you calculate 20 ounces to cups?

Multiply 20 by the conversion factor 0.125. The calculation is 20 × 0.125 = 2.5 cups. This factor is defined by international measurement standards.

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20 ounces = 2.5 cups
20 ounces = 2.5 cups — conversion chart

Nearby Conversions

4 ounces0.5 cups 8 ounces1 cup 12 ounces1.5 cups 16 ounces2 cups 24 ounces3 cups 28 ounces3.5 cups 32 ounces4 cups 36 ounces4.5 cups 40 ounces5 cups 44 ounces5.5 cups 48 ounces6 cups 52 ounces6.5 cups 56 ounces7 cups 60 ounces7.5 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.