A US liquid quart is one quarter of a US gallon.
Quarts to Cubic Decimeters Converter — qt to dm3
Convert Quart (qt) to Cubic Decimeter (dm3) using the exact conversion factor (1 quart = 0.946352946 cubic decimeter). See the formula, worked examples, conversion table, history, and common uses.
Quarts to Cubic Decimeters 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.
Cubic metric volume unit.
Result = input x 0.000946352946 / 0.001.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Quarts to Cubic Decimeters
Quart and Cubic Decimeter 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. Quart is most often used for us recipe measurement (larger liquid volumes).
Formula
cubic decimeters = quarts × 0.946352946
This factor comes from each unit's defined relationship to the category's base unit: 1 quart equals 0.000946352946 base units, and 1 cubic decimeter equals 0.001 base units, so dividing one by the other gives the direct quart-to-cubic decimeter factor of 0.946352946.
Simple example
1 qt × 0.946352946 = 0.946352946 dm3
1 quart = 0.946352946 cubic decimeters.
Real-world example
10 qt × 0.946352946 = 9.46352946 dm3
10 quarts = 9.46352946 cubic decimeters.
Conversion table
| Quart (qt) | Cubic Decimeter (dm3) |
|---|---|
| 1 qt | 0.946352946 dm3 |
| 5 qt | 4.73176473 dm3 |
| 10 qt | 9.46352946 dm3 |
| 25 qt | 23.65882365 dm3 |
| 50 qt | 47.3176473 dm3 |
| 100 qt | 94.6352946 dm3 |
Reverse conversion: Cubic Decimeter to Quart
0.946352946 dm3 × 1.056688209 = 1 qt
0.946352946 cubic decimeters = 1 quarts.
quarts = cubic decimeters × 1.05668820943
For a page dedicated to this direction, see Cubic Decimeter to Quart.
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.
Understanding the Cubic Decimeter (dm3)
Cubic metric volume unit.
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 cubic decimeters are in 1 quart?
1 quart equals 0.946352946 cubic decimeters, using the exact defined conversion factor rather than an estimate.
How do I convert quart to cubic decimeter?
Multiply the quart value by 0.946352946. The converter above does this instantly to whatever precision you set.
How do I convert cubic decimeter back to quart?
Use the reverse factor: 1 cubic decimeter equals 1.056688209 quarts. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a cubic decimeter?
Cubic Decimeter (dm3) is a unit of volume.
Is the quart to cubic decimeter 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 quart still used today?
United States (cooking, dairy, motor oil packaging)