Cups to
Fluid Ounces Converter

Convert cups to fluid ounces instantly. Supports US customary cups, metric cups, and Imperial cups with live calculations.

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3 SysUS/Metric/UK

Cups to Fluid Ounces Converter

Conversion Result
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Interactive Visual Diagram
Input Output
Cups — — Fluid Ounces (fl oz) — — — —

Cups to Fluid Ounces Chart

Quick reference for converting cups to fluid ounces.

CupsUS Fl OzmLCommon Use
0.25259.15Quarter cup
0.332.6778.86Third cup
0.54118.29Half cup
18236.59One cup
1.512354.88One and a half cups
216473.18One pint
432946.35One quart
161283785.41One gallon

Frequently Asked Questions

Common questions about this conversion tool and how to use it.

One US cup equals exactly 8 US fluid ounces (236.588 mL). A metric cup is 250 mL (8.454 fl oz).
Multiply the number of cups by 8. For example, 2.5 cups × 8 = 20 fluid ounces.
No. A US cup is 236.588 mL (8 fl oz) while a metric cup is 250 mL. Australian recipes typically use metric cups.
There are 4 cups in 1 US quart, and 2 cups in 1 US pint.