Convert Imperial Fluid Ounce to US Quart
Convert imperial fluid ounces to us quarts instantly. 1 imperial fluid ounce = 0.0300237481 us quart — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Quart to Imperial Fluid Ounce converter for the reverse conversion.
Units explained
Imperial Fluid Ounce
An imperial fluid ounce is 1/160 of an imperial gallon (28.4131 mL).
Defined so that ten fluid ounces make an imperial half-pint.
Used in UK and Commonwealth recipes and labels.
UK, 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.
Imperial Fluid Ounce to US Quart conversion formula
The relationship between imperial fluid ounces and us quarts:
To convert imperial fluid ounces to us quarts, multiply the value in imperial fluid ounces by 0.0300237481. To reverse, multiply us quarts by 33.3069673852.
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 Imperial Fluid Ounce converter for the reverse direction.
Step-by-step: convert imperial fluid ounces to us quarts
- Write down the value in imperial fluid ounces (fl oz).
- Multiply that value by the factor 0.0300237481.
- The product is the equivalent value in us quarts (qt).
- To reverse, multiply the us quart value by 33.3069673852.
Worked examples
Example 1 — Convert 1 fl oz to qt:
1 × 0.0300237481 = 0.0300237481 qt
Example 2 — Convert 100 fl oz to qt:
100 × 0.0300237481 = 3.0023748138 qt
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 imperial fluid ounces), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 fl oz × 0.0300237481 = 0.0900712444 qt
Real-world example — Plastic-film thickness alternates
A 150-imperial 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 × 0.0300237481 = 4.5035622206 qt
Real-world example — Hair-width scale measurements
A 70-imperial 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 × 0.0300237481 = 2.1016623696 qt
Imperial Fluid Ounce to US Quart conversion table
Standard reference values for converting imperial fluid ounces to us quarts:
| Imperial Fluid Ounce [fl oz] | US Quart [qt] |
|---|---|
| 0.01 | 0.0003002375 |
| 0.1 | 0.0030023748 |
| 1 | 0.0300237481 |
| 2 | 0.0600474963 |
| 3 | 0.0900712444 |
| 4 | 0.1200949926 |
| 5 | 0.1501187407 |
| 10 | 0.3002374814 |
| 20 | 0.6004749628 |
| 30 | 0.9007124441 |
| 40 | 1.2009499255 |
| 50 | 1.5011874069 |
| 100 | 3.0023748138 |
| 500 | 15.0118740688 |
| 1000 | 30.0237481376 |
Frequently asked questions
How many us quarts is 1 imperial fluid ounce?
How do I convert imperial fluid ounces to us quarts?
How do I convert us quarts back to imperial fluid ounces?
How many us quarts is 100 imperial fluid ounces?
Popular volume unit conversions
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Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (3 units)
Cubic (length-derived) (3 units)
Sources & references
Conversion factor (1 fl oz = 0.0300237481 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.