An ounces calculator converts between US fluid ounces and 30+ volume units including milliliters, cups, tablespoons, liters, and gallons.
A fluid ounce (fl oz) is a unit of liquid volume. There are two types:
Note: A fluid ounce measures volume, while an ounce (oz) measures weight. They are not the same — 1 fl oz of honey weighs about 1.5 oz, while 1 fl oz of water weighs about 1.04 oz.
Key US fluid ounce conversions:
= 29.57 mL = 2 tbsp = 6 tsp.
= 1 US cup = 236.59 mL = 0.5 pint.
= 354.88 mL = 1.5 cups.
= 500 mL = 0.5 liter = 2.11 cups.
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Answers to common questions about the ounces calculator.
1 US fluid ounce = 29.5735 mL (commonly rounded to 30 mL). 1 Imperial fl oz = 28.4131 mL.
8 US fluid ounces = 1 US cup. This is one of the most common cooking conversions.
No. A fluid ounce measures volume (liquid capacity). An ounce (oz) measures weight. For water, they are close (1 fl oz of water ≈ 1.04 oz by weight), but for other liquids they differ significantly.
2 US tablespoons = 1 US fluid ounce. 1 tablespoon = 0.5 fl oz = 14.79 mL.
US fl oz × 1.0408 = Imperial fl oz. Or: 1 US fl oz = 29.57 mL; 1 Imp fl oz = 28.41 mL. The US fluid ounce is about 4% larger.