0.66666666666667 Cups to Ounces

0.66666666666667 cup ≈ 5.3333 fl oz

Calculation: fl oz = 0.66666666666667 cup × 8 ≈ 5.3333 fl oz

Cup to Ounce Converter

Choose the type of measurement to convert
Select the source unit to convert from
Select the target unit to convert to
Enter a numeric value or fraction to convert
Sig. Figures:

How much is 0.6667 cup?

158 mL (5.3 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

What does 0.6667 cup look like?

Illustration of a rocks glass
158 mL (5.3 fl oz) is about a rocks glass (old-fashioned glass) used for cocktails.

0.6667 cup on the ounce scale

cup00.20.40.60.81fl oz012345678

0.6667 cup = 5.333 fl oz

How to Convert Cup to Ounce

1 cup = 8 ounces

Ounce = Cup × 8

Example: 23 cup × 8 = 5 13 fl oz

Reverse Conversion

To convert ounces back to cups:

  • Remember, 1 ounce equals 18 cups.
  • To convert 5 13 fl oz to cup, multiply 5 13 x 18, resulting in 23 cup.

23 cup is also equal to:

Frequently Asked Questions

How much is 0.66666666666667 cups in ounces?

0.66666666666667 cups equals 5.3333 ounces. This is calculated by multiplying 0.66666666666667 by the conversion factor 8.

What does 0.66666666666667 cups look like in ounces?

0.66666666666667 cups (5.3333 ounces) is less than a cup — a partial serving.

How do you calculate 0.66666666666667 cups to ounces?

Multiply 0.66666666666667 by the conversion factor 8. The calculation is 0.66666666666667 × 8 = 5.3333 ounces. This factor is defined by international measurement standards.

Share This Calculation

0.666667 cups = 5.33333 ounces
0.666667 cups = 5.33333 ounces — conversion chart

Nearby Conversions

0.125 cups1 ounce 0.25 cups2 ounces 0.333 cups2.664 ounces 0.5 cups4 ounces 0.667 cups5.336 ounces 0.75 cups6 ounces 1 cup8 ounces 1.25 cups10 ounces

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

Also convert Cups 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.