Convert US Quart to Imperial Quart
Convert us quarts to imperial quarts instantly. 1 us quart = 0.8326741846 imperial quart — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Imperial Quart to US Quart converter for the reverse conversion.
Units explained
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 Quart
An imperial quart is one quarter of an imperial gallon (1.13652 L).
A subdivision of the 1824 imperial gallon.
Used in the UK and Commonwealth.
UK, 1824.
US Quart to Imperial Quart conversion formula
The relationship between us quarts and imperial quarts:
To convert us quarts to imperial quarts, multiply the value in us quarts by 0.8326741846. To reverse, multiply imperial quarts by 1.2009499255.
How to use this converter
Type a value into the calculator. The result in imperial 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 Imperial Quart to US Quart converter for the reverse direction.
Step-by-step: convert us quarts to imperial quarts
- Write down the value in us quarts (qt).
- Multiply that value by the factor 0.8326741846.
- The product is the equivalent value in imperial quarts (qt).
- To reverse, multiply the imperial quart value by 1.2009499255.
Worked examples
Example 1 — Convert 1 qt to qt:
1 × 0.8326741846 = 0.8326741846 qt
Example 2 — Convert 100 qt to qt:
100 × 0.8326741846 = 83.2674184629 qt
Real-world example — Plastic film and laminate thickness
A 500-us quart sheet is a typical spec for ID-card laminates and film overlays. Converting to imperial quarts aligns the value with the unit most CAD systems and material datasheets prefer.
500 qt × 0.8326741846 = 416.3370923145 qt
Real-world example — Packaging gauge
A 4-us quart plastic bag thickness is a common spec for grocery and freezer bags. Converting from us quarts to imperial quarts is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 qt × 0.8326741846 = 3.3306967385 qt
US Quart to Imperial Quart conversion table
Standard reference values for converting us quarts to imperial quarts:
| US Quart [qt] | Imperial Quart [qt] |
|---|---|
| 0.01 | 0.0083267418 |
| 0.1 | 0.0832674185 |
| 1 | 0.8326741846 |
| 2 | 1.6653483693 |
| 3 | 2.4980225539 |
| 4 | 3.3306967385 |
| 5 | 4.1633709231 |
| 10 | 8.3267418463 |
| 20 | 16.6534836926 |
| 30 | 24.9802255389 |
| 40 | 33.3069673852 |
| 50 | 41.6337092314 |
| 100 | 83.2674184629 |
| 500 | 416.3370923145 |
| 1000 | 832.674184629 |
Frequently asked questions
How many imperial quarts is 1 us quart?
How do I convert us quarts to imperial quarts?
How do I convert imperial quarts back to us quarts?
How many imperial quarts is 100 us quarts?
Popular volume unit conversions
Convert US Quart 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 qt = 0.8326741846 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.