Convert fluid ounces to US liquid quarts instantly. Exact definition, free, no sign-up required.
Quick Answer: There are 32 fluid ounces in one US liquid quart. Divide any fl oz value by 32 to get quarts. Common values: 8 oz = 0.25 qt · 16 oz = 0.5 qt · 32 oz = 1 qt · 64 oz = 2 qt · 128 oz = 4 qt.
Formula: quarts = fl oz ÷ 32
Need to go from quarts back to fluid ounces? Our quart to oz converter handles the reverse calculation.
Quarts = Fluid Ounces ÷ 32
Fluid Ounces = Quarts × 32
One US liquid quart equals exactly 32 fluid ounces — defined as 1/4 of a US gallon (128 fl oz ÷ 4 = 32). This is an exact integer relationship with no rounding, making oz-to-quart one of the cleanest conversions in the US customary system.
| Fluid Ounces (fl oz) | Quarts (qt) | Fraction | Common Reference |
|---|---|---|---|
| 4 fl oz | 0.125 qt | ⅛ qt | ½ cup |
| 8 fl oz | 0.25 qt | ¼ qt | 1 cup |
| 12 fl oz | 0.375 qt | ⅜ qt | soda can |
| 16 fl oz | 0.5 qt | ½ qt | 1 pint / standard bottle |
| 24 fl oz | 0.75 qt | ¾ qt | sport bottle |
| 32 fl oz | 1 qt | 1 qt | 1 quart / mason jar |
| 40 fl oz | 1.25 qt | 1¼ qt | — |
| 48 fl oz | 1.5 qt | 1½ qt | — |
| 64 fl oz | 2 qt | 2 qt | half-gallon jug |
| 96 fl oz | 3 qt | 3 qt | ¾ gallon |
| 128 fl oz | 4 qt | 4 qt | 1 gallon |
| 160 fl oz | 5 qt | 5 qt | — |
| 256 fl oz | 8 qt | 8 qt | 2 gallons |
| 640 fl oz | 20 qt | 20 qt | 5-gallon jug |
Recipes often call for fractional cup or tablespoon amounts. This table shows how small volumes translate into quart fractions — useful when scaling up large-batch recipes.
| Volume | fl oz | Quarts |
|---|---|---|
| 1 teaspoon | 0.167 fl oz | 0.0052 qt |
| 1 tablespoon | 0.5 fl oz | 0.0156 qt |
| ¼ cup | 2 fl oz | 0.0625 qt |
| ½ cup | 4 fl oz | 0.125 qt |
| 1 cup | 8 fl oz | 0.25 qt |
| 2 cups (1 pint) | 16 fl oz | 0.5 qt |
| 4 cups (1 quart) | 32 fl oz | 1 qt |
The quart sits precisely in the middle of the US liquid measurement hierarchy. Understanding its position makes all nearby conversions faster:
| Unit | fl oz | Quarts | Gallons |
|---|---|---|---|
| 1 teaspoon | 0.167 | 0.0052 | 0.0013 |
| 1 tablespoon | 0.5 | 0.0156 | 0.0039 |
| 1 cup | 8 | 0.25 | 0.0625 |
| 1 pint | 16 | 0.5 | 0.125 |
| 1 quart | 32 | 1 | 0.25 |
| 1 gallon | 128 | 4 | 1 |
The quart is exactly 1/4 of a gallon and exactly 2 pints. For full gallon-level conversions, our oz to gallon calculator covers all 128-oz relationships in detail.
The quart is one of the most practical units in American home cooking. Here are the real containers and products most commonly measured in quarts:
For a complete reference of how all US units relate across cups, pints, quarts, and gallons, see our liquid measurement conversion chart.
A US quart (32 fl oz = 946 ml) and a liter (1000 ml = 33.81 fl oz) are often confused because they are close in size. The practical differences:
All US customary unit definitions follow the standards set by the National Institute of Standards and Technology (NIST).
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