US fl oz to Cups Converter

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Convert US fluid ounces to US cups using the customary 8-fl-oz cup: 8 fl oz = 1 cup (236.59 ml); 16 fl oz = 2 cups; 24 fl oz = 3 cups. The legal 240 ml cup used in nutrition labelling is about 1.4 % larger. Useful when a US drink-can volume in fl oz needs to be expressed in cups for recipe scaling. Browser-local.

Fluid ounce (US)
Cup (US)

Fluid ounce (US) → Cup (US)

Quick reference table

Fluid ounce (US)Cup (US)
1 fl oz (US)0.125 cup (US)
2 fl oz (US)0.25 cup (US)
5 fl oz (US)0.625 cup (US)
10 fl oz (US)1.25 cup (US)
25 fl oz (US)3.125 cup (US)
50 fl oz (US)6.25 cup (US)
100 fl oz (US)12.5 cup (US)

Glossary

US fluid ounce (fl oz)

A US fluid ounce is exactly 1/128 of a US gallon, or about 29.5735 ml. It is the dominant volume unit on US food, drink and personal-care packaging. Eight US fluid ounces make one US cup; 16 make a US pint; 32 make a quart; 128 make a US gallon. Do not confuse with the UK fluid ounce (≈28.41 ml).

US cup

A US customary cup is exactly 8 US fluid ounces or about 236.59 ml — the value used in most US recipes and on cooking measuring cups. The US legal cup used in nutrition labelling is slightly larger at exactly 240 ml (a 1.4 % difference). This converter uses the customary 8-fl-oz cup. One cup contains 16 tablespoons or 48 teaspoons.

Metric / SI volume

In the metric system, volume is reported in liters (everyday) or cubic meters (industrial), with millilters for fine resolution. The relations are exact powers of ten: 1 m³ = 1,000 L = 1,000,000 ml, and 1 ml = 1 cm³. The metric system is the standard worldwide for science, beverages, fuel in metric countries, and most modern recipes outside the United States.

Imperial / US Customary volume

US customary and UK imperial systems both use gallon, quart, pint and fluid ounce — but with different sizes. The US gallon is 3.785 L (128 US fl oz); the UK imperial gallon is 4.546 L (160 UK fl oz). Cooking units (tsp = 4.93 ml, tbsp = 14.79 ml, cup = 240 ml) follow the US standard in nearly all modern English-language recipes.

Related tools

US Cups to US Fluid Ounces
Convert US cups to US fl oz — 1 cup = 8 fl oz (236.59 ml)
US Fluid Ounces to Milliliters
Convert US fl oz to ml — 1 fl oz = 29.5735 ml
US Cups to Milliliters
Convert US cups to ml — 1 US cup = 240 ml
Volume Converter
Convert volumes — ml, L, m³, cups, tbsp, fl oz, US/UK gallons and pints