18 Ounces to Quarts

18 fl oz = 0.5625 qt

Calculation: qt = 18 fl oz × 0.03125 = 0.5625 qt

Ounce to Quart Converter

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How much is 18 fl oz?

532 mL (18 fl oz) is about a standard wine bottle (750 mL / 25.4 fl oz).

What does 18 fl oz look like?

Illustration of a wine bottle
532 mL (18 fl oz) is about a standard wine bottle (750 mL / 25.4 fl oz).

18 fl oz on the quart scale

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18 fl oz = 0.5625 qt

Did you know? Water bottle (standard) is 500 mL.

The standard single-serve water bottle is 500 mL (16.9 fl oz), half a liter.

How to Convert Ounce to Quart

1 ounce = 132 quarts

Quart = Ounce × 132

Example: 18 fl oz × 132 = 916 qt

Reverse Conversion

To convert quarts back to ounces:

  • Remember, 1 quart equals 32 ounces.
  • To convert 916 qt to fl oz, multiply 916 x 32, resulting in 18 fl oz.

18 fl oz is also equal to:

Frequently Asked Questions

How much is 18 ounces in quarts?

18 ounces equals 0.5625 quarts. This is calculated by multiplying 18 by the conversion factor 0.03125.

What does 18 ounces look like in quarts?

18 ounces (0.5625 quarts) is a pint to a quart — a large glass or a small bottle.

How do you calculate 18 ounces to quarts?

Multiply 18 by the conversion factor 0.03125. The calculation is 18 × 0.03125 = 0.5625 quarts. This factor is defined by international measurement standards.

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18 ounces = 0.5625 quarts
18 ounces = 0.5625 quarts — conversion chart

Nearby Conversions

2 ounces0.0625 quarts 6 ounces0.1875 quarts 10 ounces0.3125 quarts 14 ounces0.4375 quarts 22 ounces0.6875 quarts 26 ounces0.8125 quarts 30 ounces0.9375 quarts 34 ounces1.063 quarts 38 ounces1.188 quarts 42 ounces1.313 quarts 46 ounces1.438 quarts 50 ounces1.563 quarts 54 ounces1.688 quarts 58 ounces1.813 quarts

For general conversions between ounces and quarts, see the ounces to quarts converter.

Also convert Ounces to:

Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.