How to Convert US fluid ounces to US quarts (fl oz to qt)
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres. This guide shows how to convert us fluid ounces into us quarts by hand, with examples and a quick-reference table.
The conversion
To convert us fluid ounces to us quarts, multiply the value by 0.031249967. To go the other way, divide by the same number (or multiply by 32.0000338141). For a quick estimate, multiply by about 0.031.
US quarts = us fluid ounces × 0.031249967
Worked examples
- 3 fl oz = 0.09375 qt
- 12.5 fl oz = 0.390625 qt
- 75 fl oz = 2.3437 qt
US fluid ounces to US quarts table
| US fluid ounces | US quarts |
|---|---|
| 1 fl oz | 0.03125 qt |
| 2 fl oz | 0.0625 qt |
| 5 fl oz | 0.15625 qt |
| 10 fl oz | 0.3125 qt |
| 20 fl oz | 0.624999 qt |
| 25 fl oz | 0.781249 qt |
| 50 fl oz | 1.5625 qt |
| 100 fl oz | 3.125 qt |
| 250 fl oz | 7.8125 qt |
| 500 fl oz | 15.625 qt |
| 1,000 fl oz | 31.25 qt |
Common questions
Is fl oz to qt exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the US quarts to US fluid ounces converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
For any value, use the US fluid ounces to US quarts Converter or browse all volume converters.
Run your own numbers: US fluid ounces to US quarts Converter