An imperial quart is one quarter of an imperial gallon.
Imperial quarts to Liters Converter — imp qt to L
Convert Imperial quart (imp qt) to Liter (L) using the exact conversion factor (1 imperial quart = 1.1365225 liter). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Imperial quarts to Liters 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 liter is one cubic decimeter.
Result = input x 0.0011365225 / 0.001.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial quarts to Liters
Imperial quart and Liter 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 Liter is typically associated with standard volume unit for liquids worldwide, including in the US for beverages and fuel labeling in some contexts.
Formula
liters = imperial quarts × 1.1365225
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 liter equals 0.001 base units, so dividing one by the other gives the direct imperial quart-to-liter factor of 1.1365225.
Simple example
1 imp qt × 1.1365225 = 1.1365225 L
1 imperial quart = 1.1365225 liters.
Real-world example
10 imp qt × 1.1365225 = 11.365225 L
10 imperial quarts = 11.365225 liters.
Conversion table
| Imperial quart (imp qt) | Liter (L) |
|---|---|
| 1 imp qt | 1.1365225 L |
| 5 imp qt | 5.6826125 L |
| 10 imp qt | 11.365225 L |
| 25 imp qt | 28.4130625 L |
| 50 imp qt | 56.826125 L |
| 100 imp qt | 113.65225 L |
Reverse conversion: Liter to Imperial quart
1.1365225 L × 0.8798769932 = 1 imp qt
1.1365225 liters = 1 imperial quarts.
imperial quarts = liters × 0.879876993196
For a page dedicated to this direction, see Liter to Imperial quart.
Imperial quart vs. Liter
| Aspect | Imperial quart | Liter |
|---|---|---|
| Family | UK/imperial customary unit | Non-SI metric unit accepted for use with SI |
| Typical use | UK/Commonwealth liquid measurement in historical or specialized contexts | Beverage, fuel, and liquid product packaging worldwide |
| Where it's used | United Kingdom and Commonwealth countries (historically) | Standard volume unit for liquids worldwide, including in the US for beverages and fuel labeling in some contexts |
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 Liter
Liter (L) measures volume. A liter is defined as exactly one cubic decimeter (0.001 cubic meters). It is classified as a Non-SI metric unit accepted for use with SI.
Where it's used: Standard volume unit for liquids worldwide, including in the US for beverages and fuel labeling in some contexts
Uses of the Liter today
- Beverage, fuel, and liquid product packaging worldwide
- Cooking and recipe measurement in metric countries
- Laboratory and scientific volume measurement
History of the Liter
The liter was introduced with the French metric system in 1795, originally defined as the volume of one kilogram of pure water at its freezing point — tying volume, mass, and the meter together.
Between 1901 and 1964, the liter was briefly redefined as the volume of exactly one kilogram of water at its maximum density (about 4 °C), which made it very slightly larger than a cubic decimeter. It was redefined back to exactly one cubic decimeter in 1964, the definition still used today.
Historical origin. Liter 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.
Liter — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Current cubic-decimeter definition of the liter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many liters are in 1 imperial quart?
1 imperial quart equals 1.1365225 liters, using the exact defined conversion factor rather than an estimate.
How do I convert imperial quart to liter?
Multiply the imperial quart value by 1.1365225. The converter above does this instantly to whatever precision you set.
How do I convert liter back to imperial quart?
Use the reverse factor: 1 liter equals 0.8798769932 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 liter?
Liter (L) measures volume. A liter is defined as exactly one cubic decimeter (0.001 cubic meters). It is classified as a Non-SI metric unit accepted for use with SI.
Is the imperial quart to liter conversion exact?
Yes. A liter is defined as exactly one cubic decimeter (0.001 cubic meters). 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)