Volume · Unit Converter

Convert US Cup to Imperial Quart

Convert us cups to imperial quarts instantly. 1 us cup = 0.2081685462 imperial quart — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Imperial Quart to US Cup converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Jaya Christiyan K G, Ph.D.
Volume category 2 min read Published Last reviewed Updated

Units explained

US Customary (Liquid)

US Cup

What is a us cup?

A US customary cup is one sixteenth of a US gallon (236.588 mL).

Origin of the us cup

Standardized for American cooking; distinct from the 240 mL US legal cup and the 250 mL metric cup.

Where it is used

The standard US cooking-volume unit in recipes.

When and where it was developed

US customary cooking measure.

Imperial (UK)

Imperial Quart

What is a imperial quart?

An imperial quart is one quarter of an imperial gallon (1.13652 L).

Origin of the imperial quart

A subdivision of the 1824 imperial gallon.

Where it is used

Used in the UK and Commonwealth.

When and where it was developed

UK, 1824.

US Cup to Imperial Quart conversion formula

The relationship between us cups and imperial quarts:

1 cup = 0.2081685462 qt
1 qt = 4.803799702 cup

To convert us cups to imperial quarts, multiply the value in us cups by 0.2081685462. To reverse, multiply imperial quarts by 4.803799702.

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 Cup converter for the reverse direction.

Step-by-step: convert us cups to imperial quarts

  1. Write down the value in us cups (cup).
  2. Multiply that value by the factor 0.2081685462.
  3. The product is the equivalent value in imperial quarts (qt).
  4. To reverse, multiply the imperial quart value by 4.803799702.

Worked examples

Example 1 — Convert 1 cup to qt:
1 × 0.2081685462 = 0.2081685462 qt

Example 2 — Convert 100 cup to qt:
100 × 0.2081685462 = 20.8168546157 qt

Real-world example — Plastic film and laminate thickness

A 500-us cup 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 cup × 0.2081685462 = 104.0842730786 qt

Real-world example — Packaging gauge

A 4-us cup plastic bag thickness is a common spec for grocery and freezer bags. Converting from us cups to imperial quarts is what packaging buyers do whenever they bridge US and metric supplier quotes.

4 cup × 0.2081685462 = 0.8326741846 qt

US Cup to Imperial Quart conversion table

Standard reference values for converting us cups to imperial quarts:

US Cup [cup]Imperial Quart [qt]
0.010.0020816855
0.10.0208168546
10.2081685462
20.4163370923
30.6245056385
40.8326741846
51.0408427308
102.0816854616
204.1633709231
306.2450563847
408.3267418463
5010.4084273079
10020.8168546157
500104.0842730786
1000208.1685461572

Frequently asked questions

How many imperial quarts is 1 us cup?
1 us cup equals 0.2081685462 imperial quart.
How do I convert us cups to imperial quarts?
Multiply the value in us cups by 0.2081685462 to get imperial quarts.
How do I convert imperial quarts back to us cups?
Multiply the value in imperial quarts by 4.803799702, or use the Imperial Quart to US Cup converter.
How many imperial quarts is 100 us cups?
100 us cups equals 20.8168546157 imperial quarts, because 100 × 0.2081685462 = 20.8168546157.

Convert US Cup to other volume units

Show all US Cup conversions
Metric / SI (8 units)
US Cup to Cubic Centimeter (cm³) US Cup to Milliliter (mL) US Cup to Centiliter (cL) US Cup to Deciliter (dL) US Cup to Cubic Decimeter (dm³) US Cup to Liter (L) US Cup to Hectoliter (hL) US Cup to Cubic Meter (m³)
US Customary (Liquid) (7 units)
US Cup to US Teaspoon (tsp) US Cup to US Tablespoon (tbsp) US Cup to US Fluid Ounce (fl oz) US Cup to US Pint (pt) US Cup to US Quart (qt) US Cup to US Gallon (gal) US Cup to US Oil Barrel (bbl (oil))
Imperial (UK) (4 units)
US Cup to Imperial Fluid Ounce (fl oz) US Cup to Imperial Pint (pt) US Cup to Imperial Quart (qt) US Cup to Imperial Gallon (gal)
Cubic (length-derived) (3 units)
US Cup to Cubic Inch (in³) US Cup to Cubic Foot (ft³) US Cup to Cubic Yard (yd³)
Cooking / Culinary (3 units)
US Cup to Metric Teaspoon (tsp) US Cup to Metric Tablespoon (tbsp) US Cup to Metric Cup (cup)

Sources & references

Conversion factor (1 cup = 0.2081685462 qt) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.