Convert Imperial Quart to US Cup
Convert imperial quarts to us cups instantly. 1 imperial quart = 4.803799702 us cup — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Cup to Imperial Quart converter for the reverse conversion.
Units explained
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 Cup
A US customary cup is one sixteenth of a US gallon (236.588 mL).
Standardized for American cooking; distinct from the 240 mL US legal cup and the 250 mL metric cup.
The standard US cooking-volume unit in recipes.
US customary cooking measure.
Imperial Quart to US Cup conversion formula
The relationship between imperial quarts and us cups:
To convert imperial quarts to us cups, multiply the value in imperial quarts by 4.803799702. To reverse, multiply us cups by 0.2081685462.
How to use this converter
Type a value into the calculator. The result in us cups 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 Cup to Imperial Quart converter for the reverse direction.
Step-by-step: convert imperial quarts to us cups
- Write down the value in imperial quarts (qt).
- Multiply that value by the factor 4.803799702.
- The product is the equivalent value in us cups (cup).
- To reverse, multiply the us cup value by 0.2081685462.
Worked examples
Example 1 — Convert 1 qt to cup:
1 × 4.803799702 = 4.803799702 cup
Example 2 — Convert 100 qt to cup:
100 × 4.803799702 = 480.3799702019 cup
Real-world example — Adjacent small-scale precision
One imperial quart equals 1,000 us cups — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).
1 qt × 4.803799702 = 4.803799702 cup
Real-world example — Adjacent metric sub-units
One imperial quart equals 1,000 us cups. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.
1 qt × 4.803799702 = 4.803799702 cup
Imperial Quart to US Cup conversion table
Standard reference values for converting imperial quarts to us cups:
| Imperial Quart [qt] | US Cup [cup] |
|---|---|
| 0.01 | 0.048037997 |
| 0.1 | 0.4803799702 |
| 1 | 4.803799702 |
| 2 | 9.607599404 |
| 3 | 14.4113991061 |
| 4 | 19.2151988081 |
| 5 | 24.0189985101 |
| 10 | 48.0379970202 |
| 20 | 96.0759940404 |
| 30 | 144.1139910606 |
| 40 | 192.1519880808 |
| 50 | 240.189985101 |
| 100 | 480.3799702019 |
| 500 | 2401.8998510097 |
| 1000 | 4803.7997020194 |
Frequently asked questions
How many us cups is 1 imperial quart?
How do I convert imperial quarts to us cups?
How do I convert us cups back to imperial quarts?
How many us cups is 100 imperial quarts?
Popular volume unit conversions
Convert Imperial Quart to other volume units
Show all Imperial Quart conversions
Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (3 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 qt = 4.803799702 cup) 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.