An imperial quart is one quarter of an imperial gallon.
Imperial quarts to Cups Converter — imp qt to cup
Convert Imperial quart (imp qt) to Cup (cup) using the exact conversion factor (1 imperial quart = 4.803799702 cup). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Imperial quarts to Cups converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
A US customary cup is 236.5882365 milliliters.
Result = input x 0.0011365225 / 0.0002365882365.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial quarts to Cups
Imperial quart and Cup appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Imperial quart is typically associated with united Kingdom and Commonwealth countries (historically), while Cup is typically associated with united States (recipes and cooking measurement).
Formula
cups = imperial quarts × 4.80379970202
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial quart equals 0.0011365225 base units, and 1 cup equals 0.0002365882365 base units, so dividing one by the other gives the direct imperial quart-to-cup factor of 4.80379970202.
Simple example
1 imp qt × 4.803799702 = 4.803799702 cup
1 imperial quart = 4.803799702 cups.
Real-world example
10 imp qt × 4.803799702 = 48.03799702 cup
10 imperial quarts = 48.03799702 cups.
Conversion table
| Imperial quart (imp qt) | Cup (cup) |
|---|---|
| 1 imp qt | 4.803799702 cup |
| 5 imp qt | 24.01899851 cup |
| 10 imp qt | 48.03799702 cup |
| 25 imp qt | 120.0949926 cup |
| 50 imp qt | 240.1899851 cup |
| 100 imp qt | 480.3799702 cup |
Reverse conversion: Cup to Imperial quart
4.803799702 cup × 0.2081685462 = 1 imp qt
4.803799702 cups = 1 imperial quarts.
imperial quarts = cups × 0.208168546157
For a page dedicated to this direction, see Cup to Imperial quart.
Imperial quart vs. Cup
| Aspect | Imperial quart | Cup |
|---|---|---|
| Family | UK/imperial customary unit | US customary unit (culinary) |
| Typical use | UK/Commonwealth liquid measurement in historical or specialized contexts | US recipe and cooking measurement |
| Where it's used | United Kingdom and Commonwealth countries (historically) | United States (recipes and cooking measurement) |
Understanding the Imperial quart
Imperial quart (imp qt) measures volume. The imperial quart is one-quarter of an imperial gallon: exactly 1.1365225 liters. It is classified as a UK/imperial customary unit.
Where it's used: United Kingdom and Commonwealth countries (historically)
Imperial quart vs. US quart. Like the gallon and pint, the imperial quart is about 20% larger than the US quart, following from Britain's 1824 gallon redefinition.
Uses of the Imperial quart today
- UK/Commonwealth liquid measurement in historical or specialized contexts
History of the Imperial quart
The imperial quart follows directly from the 1824 imperial gallon as one-quarter of it, part of the same UK standardization that diverged from the US gallon system.
Historical origin. Imperial quart was not the invention of a single named person; it developed through the process described above.
Understanding the Cup
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
Where it's used: United States (recipes and cooking measurement)
Cooking cup vs. legal US cup. US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Uses of the Cup today
- US recipe and cooking measurement
- Nutrition labeling serving sizes
- Baking, where volume-based flour/sugar measurement is still common in the US
History of the Cup
The cup as a cooking measure grew out of household and community cookbook conventions in 19th-century America, standardizing what had been ad hoc measurements ('a teacup of flour') into a fixed volume.
The US FDA uses a rounded 240 mL 'metric cup' for nutrition labeling purposes, distinct from the slightly smaller legal/customary cup (236.588 mL, exactly 1/16 of a US gallon) used elsewhere.
Historical origin. Cup was not the invention of a single named person; it developed through the process described above.
Imperial quart — sources
- UK Weights and Measures Act 1824 — Basis for the imperial quart via the imperial gallon.
Cup — sources
- US FDA — Reference Amounts Customarily Consumed — Uses the 240 mL rounded cup for nutrition labeling.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cups are in 1 imperial quart?
1 imperial quart equals 4.803799702 cups, using the exact defined conversion factor rather than an estimate.
How do I convert imperial quart to cup?
Multiply the imperial quart value by 4.803799702. The converter above does this instantly to whatever precision you set.
How do I convert cup back to imperial quart?
Use the reverse factor: 1 cup equals 0.2081685462 imperial quarts. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial quart?
Imperial quart (imp qt) measures volume. The imperial quart is one-quarter of an imperial gallon: exactly 1.1365225 liters. It is classified as a UK/imperial customary unit.
What is a cup?
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
Is the imperial quart to cup conversion exact?
Yes. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between imperial quart vs. us quart?
Like the gallon and pint, the imperial quart is about 20% larger than the US quart, following from Britain's 1824 gallon redefinition.
Where is the imperial quart still used today?
United Kingdom and Commonwealth countries (historically)