A US teaspoon is one third of a US tablespoon.
Teaspoons to Quarts Converter — tsp to qt
Convert Teaspoon (tsp) to Quart (qt) using the exact conversion factor (1 teaspoon = 0.0052083333 quart). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Teaspoons 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 4.92892159e-6 / 0.000946352946.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Teaspoons to Quarts
Teaspoon 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. Teaspoon is typically associated with united States (cooking and recipe measurement), while Quart is typically associated with united States (cooking, dairy, motor oil packaging).
Formula
quarts = teaspoons × 0.00520833333333
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon equals 0.00000492892159375 base units, and 1 quart equals 0.000946352946 base units, so dividing one by the other gives the direct teaspoon-to-quart factor of 0.00520833333333.
Simple example
1 tsp × 0.005208333333 = 0.0052083333 qt
1 teaspoon = 0.0052083333 quarts.
Real-world example
10 tsp × 0.005208333333 = 0.0520833333 qt
10 teaspoons = 0.0520833333 quarts.
Conversion table
| Teaspoon (tsp) | Quart (qt) |
|---|---|
| 1 tsp | 0.0052083333 qt |
| 5 tsp | 0.0260416667 qt |
| 10 tsp | 0.0520833333 qt |
| 25 tsp | 0.1302083333 qt |
| 50 tsp | 0.2604166667 qt |
| 100 tsp | 0.5208333333 qt |
Reverse conversion: Quart to Teaspoon
0.0052083333 qt × 192 = 0.9999999936 tsp
0.0052083333 quarts = 0.9999999936 teaspoons.
teaspoons = quarts × 192
For a page dedicated to this direction, see Quart to Teaspoon.
Teaspoon vs. Quart
| Aspect | Teaspoon | Quart |
|---|---|---|
| Family | US customary unit | US customary unit |
| Typical use | US recipe and cooking measurement for small quantities | US recipe measurement (larger liquid volumes) |
| Where it's used | United States (cooking and recipe measurement) | United States (cooking, dairy, motor oil packaging) |
Understanding the Teaspoon
Teaspoon (tsp) measures volume. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. It is classified as a US customary unit.
Where it's used: United States (cooking and recipe measurement)
Uses of the Teaspoon today
- US recipe and cooking measurement for small quantities
- Medication dosing instructions in the US
- Baking measurement alongside the tablespoon and cup
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.
Teaspoon — sources
- NIST Handbook 44, Appendix C — General tables of units including the US teaspoon definition.
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 teaspoon?
1 teaspoon equals 0.0052083333 quarts, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon to quart?
Multiply the teaspoon value by 0.005208333333. The converter above does this instantly to whatever precision you set.
How do I convert quart back to teaspoon?
Use the reverse factor: 1 quart equals 192 teaspoons. You can also use the swap control in the converter above to flip the direction instantly.
What is a teaspoon?
Teaspoon (tsp) measures volume. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. It is classified as a US customary 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 teaspoon 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 teaspoon still used today?
United States (cooking and recipe measurement)