Milliliter is 0.001 liter units.
Milliliters to Quarts Converter — mL to qt
Convert Milliliter (mL) to Quart (qt) using the exact conversion factor (1 milliliter = 0.0010566882 quart). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Milliliters to Quarts 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 liquid quart is one quarter of a US gallon.
Result = input x 1e-6 / 0.000946352946.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milliliters to Quarts
Milliliter and Quart 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. Milliliter is typically associated with standard small-volume unit worldwide, while Quart is typically associated with united States (cooking, dairy, motor oil packaging).
Formula
quarts = milliliters × 0.00105668820943
This factor comes from each unit's defined relationship to the category's base unit: 1 milliliter equals 0.000001 base units, and 1 quart equals 0.000946352946 base units, so dividing one by the other gives the direct milliliter-to-quart factor of 0.00105668820943.
Simple example
1 mL × 0.001056688209 = 0.0010566882 qt
1 milliliter = 0.0010566882 quarts.
Real-world example
10 mL × 0.001056688209 = 0.0105668821 qt
10 milliliters = 0.0105668821 quarts.
Conversion table
| Milliliter (mL) | Quart (qt) |
|---|---|
| 1 mL | 0.0010566882 qt |
| 5 mL | 0.005283441 qt |
| 10 mL | 0.0105668821 qt |
| 25 mL | 0.0264172052 qt |
| 50 mL | 0.0528344105 qt |
| 100 mL | 0.1056688209 qt |
Reverse conversion: Quart to Milliliter
0.0010566882 qt × 946.352946 = 0.9999999911 mL
0.0010566882 quarts = 0.9999999911 milliliters.
milliliters = quarts × 946.352946
For a page dedicated to this direction, see Quart to Milliliter.
Milliliter vs. Quart
| Aspect | Milliliter | Quart |
|---|---|---|
| Family | SI derived (metric prefix) unit | US customary unit |
| Typical use | Medicine dosing (worldwide, including in the US) | US recipe measurement (larger liquid volumes) |
| Where it's used | Standard small-volume unit worldwide | United States (cooking, dairy, motor oil packaging) |
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.
Understanding the Quart
Quart (qt) measures volume. The US liquid quart is exactly one-quarter of a US gallon: 0.946352946 liters. It is classified as a US customary unit.
Where it's used: United States (cooking, dairy, motor oil packaging)
Uses of the Quart today
- US recipe measurement (larger liquid volumes)
- US motor oil and automotive fluid packaging
- US dairy and beverage packaging (quart containers)
History of the Quart
The quart ('quarter' of a gallon) follows the same English wine-gallon lineage as the US gallon, retained by the US after England moved to a different imperial standard in 1824.
Historical origin. Quart was not the invention of a single named person; it developed through the process described above.
Milliliter — sources
- BIPM SI Brochure — SI prefixes — Defines 'milli-' as the prefix for 10⁻³.
Quart — sources
- NIST Handbook 44, Appendix C — General tables of units including the US quart definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quarts are in 1 milliliter?
1 milliliter equals 0.0010566882 quarts, using the exact defined conversion factor rather than an estimate.
How do I convert milliliter to quart?
Multiply the milliliter value by 0.001056688209. The converter above does this instantly to whatever precision you set.
How do I convert quart back to milliliter?
Use the reverse factor: 1 quart equals 946.352946 milliliters. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a quart?
Quart (qt) measures volume. The US liquid quart is exactly one-quarter of a US gallon: 0.946352946 liters. It is classified as a US customary unit.
Is the milliliter to quart conversion exact?
Yes. The US liquid quart is exactly one-quarter of a US gallon: 0.946352946 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.
Where is the milliliter still used today?
Standard small-volume unit worldwide