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Quart to Oz Converter

Convert US quarts to fluid ounces instantly. The exact formula, a full table, and nothing extra.

Quick Answer: One US liquid quart equals exactly 32 fluid ounces. To convert quarts to oz, multiply by 32. For example, 4 quarts = 128 fl oz (one gallon), and 0.5 quarts = 16 fl oz (one pint).

Quarts to Fluid Ounces Calculator

Fluid Ounces (fl oz) 32 fl oz

Formula: fl oz = quarts × 32

📐 Quart to Oz Formula

Fluid Ounces = Quarts × 32 Quarts = Fluid Ounces ÷ 32

The US liquid quart is exactly 1/4 of a US gallon. Since 1 gallon = 128 fl oz, dividing by 4 gives 32 fl oz per quart. This is an exact definition with no rounding involved.

Quart to Oz Conversion Table

Quarts (qt)Fluid Ounces (fl oz)Common Reference
0.25 qt8 fl oz1 cup
0.5 qt16 fl oz1 pint
1 qt32 fl oz1 quart / Nalgene
2 qt64 fl ozhalf gallon
3 qt96 fl oz3/4 gallon
4 qt128 fl oz1 gallon
5 qt160 fl oz—
10 qt320 fl oz2.5 gallons
20 qt640 fl oz5 gallons
50 qt1,600 fl oz—
100 qt3,200 fl oz—

Kitchen reference: Most US stock pot recipes call for quarts of broth. A 32 oz (1 qt) carton is the standard retail size for soups and broths, making quart-to-oz one of the most practical cooking conversions.

Frequently Asked Questions

How many ounces are in a quart?
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One US liquid quart equals exactly 32 fluid ounces. This is a fixed definition in the US customary measurement system, not an approximation.
Is a quart the same as 32 oz?
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Yes, exactly. 1 US liquid quart = 32 US fluid ounces. The 32 oz and 1 qt labels on containers like mason jars refer to the identical volume.
How many oz in 2 quarts?
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2 quarts equals 64 fluid ounces (2 × 32 = 64). This is the same volume as a half-gallon carton of milk or juice.
How many oz in 3 quarts?
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3 quarts equals 96 fluid ounces (3 × 32 = 96), which is 3/4 of a gallon.
How many quarts in a gallon?
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There are exactly 4 quarts in one US gallon (4 × 32 = 128 fl oz). Use our oz to gallon calculator or gallon to oz converter for full gallon conversions.
How many oz in 5 quarts?
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5 quarts equals 160 fluid ounces (5 × 32 = 160), which is 1.25 gallons. A typical large stock pot holds 6–8 quarts.
How does a quart compare to a liter?
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One US quart (32 fl oz) equals approximately 0.946 liters — slightly less than a full liter. A liter is about 5.7% larger than a quart. See our liter to oz converter for metric comparisons.

All US customary unit definitions on this page follow the standards set by the National Institute of Standards and Technology (NIST).

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