Convert US Fluid Ounce to US Quart
Convert us fluid ounces to us quarts instantly. 1 us fluid ounce = 0.03125 us quart — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Quart to US Fluid Ounce converter for the reverse conversion.
Units explained
US Fluid Ounce
A US fluid ounce is 1/128 of a US gallon (29.5735 mL).
Derived from the gallon subdivision; distinct from the slightly smaller UK fluid ounce.
Standard for US beverage and nutrition labeling.
English customary; US since 1824.
US Quart
A US liquid quart is one quarter of a US gallon (0.946352946 L).
From the Latin quartus, a quarter of a gallon.
Used for milk, oil and household liquids in the US.
English customary.
US Fluid Ounce to US Quart conversion formula
The relationship between us fluid ounces and us quarts:
To convert us fluid ounces to us quarts, multiply the value in us fluid ounces by 0.03125. To reverse, multiply us quarts by 32.
How to use this converter
Type a value into the calculator. The result in us quarts updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the US Quart to US Fluid Ounce converter for the reverse direction.
Step-by-step: convert us fluid ounces to us quarts
- Write down the value in us fluid ounces (fl oz).
- Multiply that value by the factor 0.03125.
- The product is the equivalent value in us quarts (qt).
- To reverse, multiply the us quart value by 32.
Worked examples
Example 1 — Convert 1 fl oz to qt:
1 × 0.03125 = 0.03125 qt
Example 2 — Convert 100 fl oz to qt:
100 × 0.03125 = 3.125 qt
Real-world example — Plastic-film thickness alternates
A 150-us fluid ounce plastic film converts cleanly to us quarts — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 fl oz × 0.03125 = 4.6875 qt
Real-world example — Hair-width scale measurements
A 70-us fluid ounce measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like us quarts for direct comparison across supplier datasheets.
70 fl oz × 0.03125 = 2.1875 qt
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 us fluid ounces), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 fl oz × 0.03125 = 0.09375 qt
US Fluid Ounce to US Quart conversion table
Standard reference values for converting us fluid ounces to us quarts:
| US Fluid Ounce [fl oz] | US Quart [qt] |
|---|---|
| 0.01 | 0.0003125 |
| 0.1 | 0.003125 |
| 1 | 0.03125 |
| 2 | 0.0625 |
| 3 | 0.09375 |
| 4 | 0.125 |
| 5 | 0.15625 |
| 10 | 0.3125 |
| 20 | 0.625 |
| 30 | 0.9375 |
| 40 | 1.25 |
| 50 | 1.5625 |
| 100 | 3.125 |
| 500 | 15.625 |
| 1000 | 31.25 |
Frequently asked questions
How many us quarts is 1 us fluid ounce?
How do I convert us fluid ounces to us quarts?
How do I convert us quarts back to us fluid ounces?
How many us quarts is 100 us fluid ounces?
Popular volume unit conversions
Convert US Fluid Ounce to other volume units
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Metric / SI (8 units)
US Customary (Liquid) (7 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 fl oz = 0.03125 qt) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.