Fluid Ounces to Quarts Converter

About the fl oz to qt calculation

One fluid ounce is exactly 0.03125 quarts, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The US fluid ounce. Measures volume, not weight — quite separate from the ounce. A quarter of a US gallon, and exactly two US pints.

Formula

qt = fl oz × 0.03125

1 fl oz = 0.03125 qt
1 qt = 32 fl oz

Worked example

To convert 8 fl oz, multiply by 0.03125: 8 × 0.03125 = 0.25 qt.

Frequently asked questions

How many quarts are in a fluid ounce?

There are 0.03125 quarts in one fluid ounce. To convert any amount, multiply the number of fluid ounces by 0.03125.

How do I convert quarts back to fluid ounces?

Divide instead of multiplying, or equivalently multiply by 32. One quart is 32 fluid ounces.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between fluid ounces and quarts is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Fluid Ounces: the US fluid ounce. Measures volume, not weight — quite separate from the ounce. Quarts: a quarter of a US gallon, and exactly two US pints.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units