A quart is exactly equal to 32 ounces, a precise conversion factor in the US customary system for fluid volume. In everyday use, people often remember this exact number since it's a whole integer with no decimals. For example, a volume of 2 quarts works out to exactly 64 ounces, 5 quarts is exactly 160 ounces, and 10 quarts converts to exactly 320 ounces.
The formula to convert quarts to ounces:
Quarts (qt) × 32 = Ounces (oz)
Or, in a more concise way:
qt × 32 = oz
For example: