Quarts to OZ Converter

How to convert quarts to fluid ounces

1 quart = 32 fluid ounces. To convert quarts to fluid ounces, multiply by 32. A US liquid quart is a quarter of a gallon, about 946.4 ml. A US fluid ounce is 1/128 of a US gallon, exactly 29.5735295625 ml.

Worked examples

• 0.5 quarts = 16 fl oz (0.5 × 32)
• 2 quarts = 64 fl oz (2 × 32)
• 5 quarts = 160 fl oz (5 × 32)

Where this conversion comes up

Quarts are used for motor oil, milk, stock and slow-cooker sizes; fluid ounces for drink cans, baby bottles, cosmetics and US recipes. One US quart is 32 fl oz (4 cups); 1.5 qt is 48 oz and a 5-quart jug of oil is 160 oz. Dry quarts are a different, larger unit.

Quick estimate

Multiply by 32.

Common mistakes

• Dividing instead of multiplying. A fluid ounce is smaller than a quart, so the number of fluid ounces must come out larger: 0.5 quarts = 16 fl oz.
• Mixing fluid ounces with weight ounces. A fluid ounce is a volume (29.57 ml); an ounce on a kitchen scale is a weight (28.35 g). A cup of flour is 8 fl oz by volume but only about 4.25 oz by weight.
• Using the imperial (UK) unit. This page uses US measures. An imperial gallon is 4.546 L (20% more than a US gallon), an imperial pint 568 ml and an imperial fluid ounce 28.41 ml.

Going the other way? Use the oz to quarts converter. Related volume converters: ml to oz, oz to ml, liters to gallons, gallons to liters, liters to quarts, quarts to liters.