An imperial quart is one quarter of an imperial gallon.
Imperial quarts to Milliliters Converter — imp qt to mL
Convert Imperial quart (imp qt) to Milliliter (mL) using the exact conversion factor (1 imperial quart = 1,136.5225 milliliter). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Imperial quarts to Milliliters 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.
Milliliter is 0.001 liter units.
Result = input x 0.0011365225 / 1e-6.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial quarts to Milliliters
Imperial quart and Milliliter 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 Milliliter is typically associated with standard small-volume unit worldwide.
Formula
milliliters = imperial quarts × 1136.5225
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 milliliter equals 0.000001 base units, so dividing one by the other gives the direct imperial quart-to-milliliter factor of 1136.5225.
Simple example
1 imp qt × 1136.5225 = 1,136.5225 mL
1 imperial quart = 1,136.5225 milliliters.
Real-world example
10 imp qt × 1136.5225 = 11,365.225 mL
10 imperial quarts = 11,365.225 milliliters.
Conversion table
| Imperial quart (imp qt) | Milliliter (mL) |
|---|---|
| 1 imp qt | 1,136.5225 mL |
| 5 imp qt | 5,682.6125 mL |
| 10 imp qt | 11,365.225 mL |
| 25 imp qt | 28,413.0625 mL |
| 50 imp qt | 56,826.125 mL |
| 100 imp qt | 113,652.25 mL |
Reverse conversion: Milliliter to Imperial quart
1 mL × 0.0008798769932 = 0.000879877 imp qt
1 milliliter = 0.000879877 imperial quarts.
imperial quarts = milliliters × 0.000879876993196
For a page dedicated to this direction, see Milliliter to Imperial quart.
Imperial quart vs. Milliliter
| Aspect | Imperial quart | Milliliter |
|---|---|---|
| Family | UK/imperial customary unit | SI derived (metric prefix) unit |
| Typical use | UK/Commonwealth liquid measurement in historical or specialized contexts | Medicine dosing (worldwide, including in the US) |
| Where it's used | United Kingdom and Commonwealth countries (historically) | Standard small-volume unit worldwide |
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 Milliliter
Milliliter (mL) measures volume. A milliliter is one-thousandth of a liter, equal to one cubic centimeter. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard small-volume unit worldwide
Uses of the Milliliter today
- Medicine dosing (worldwide, including in the US)
- Cooking and recipe measurement outside the US
- Beverage and small-container labeling
History of the Milliliter
The milliliter follows directly from the liter via the 'milli-' SI prefix. It is notable as one of the few metric units in routine US use, since medicine dosing (syringes, liquid medication) is specified in milliliters even in the US.
Historical origin. Milliliter 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.
Milliliter — sources
- BIPM SI Brochure — SI prefixes — Defines 'milli-' as the prefix for 10⁻³.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milliliters are in 1 imperial quart?
1 imperial quart equals 1,136.5225 milliliters, using the exact defined conversion factor rather than an estimate.
How do I convert imperial quart to milliliter?
Multiply the imperial quart value by 1136.5225. The converter above does this instantly to whatever precision you set.
How do I convert milliliter back to imperial quart?
Use the reverse factor: 1 milliliter equals 0.000879877 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 milliliter?
Milliliter (mL) measures volume. A milliliter is one-thousandth of a liter, equal to one cubic centimeter. It is classified as a SI derived (metric prefix) unit.
Is the imperial quart to milliliter conversion exact?
Yes. The imperial quart is one-quarter of an imperial gallon: exactly 1.1365225 liters. 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)