A US teaspoon is one third of a US tablespoon.
Teaspoons to Cubic Decimeters Converter — tsp to dm3
Convert Teaspoon (tsp) to Cubic Decimeter (dm3) using the exact conversion factor (1 teaspoon = 0.0049289216 cubic decimeter). See the formula, worked examples, conversion table, and common uses.
Teaspoons 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 4.92892159e-6 / 0.001.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Teaspoons to Cubic Decimeters
Teaspoon 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. Teaspoon is most often used for us recipe and cooking measurement for small quantities.
Formula
cubic decimeters = teaspoons × 0.00492892159375
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon equals 0.00000492892159375 base units, and 1 cubic decimeter equals 0.001 base units, so dividing one by the other gives the direct teaspoon-to-cubic decimeter factor of 0.00492892159375.
Simple example
1 tsp × 0.004928921594 = 0.0049289216 dm3
1 teaspoon = 0.0049289216 cubic decimeters.
Real-world example
10 tsp × 0.004928921594 = 0.0492892159 dm3
10 teaspoons = 0.0492892159 cubic decimeters.
Conversion table
| Teaspoon (tsp) | Cubic Decimeter (dm3) |
|---|---|
| 1 tsp | 0.0049289216 dm3 |
| 5 tsp | 0.024644608 dm3 |
| 10 tsp | 0.0492892159 dm3 |
| 25 tsp | 0.1232230398 dm3 |
| 50 tsp | 0.2464460797 dm3 |
| 100 tsp | 0.4928921594 dm3 |
Reverse conversion: Cubic Decimeter to Teaspoon
0.0049289216 dm3 × 202.8841362 = 1.000000001 tsp
0.0049289216 cubic decimeters = 1.000000001 teaspoons.
teaspoons = cubic decimeters × 202.884136211
For a page dedicated to this direction, see Cubic Decimeter to Teaspoon.
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 Cubic Decimeter (dm3)
Cubic metric volume unit.
Teaspoon — sources
- NIST Handbook 44, Appendix C — General tables of units including the US teaspoon definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic decimeters are in 1 teaspoon?
1 teaspoon equals 0.0049289216 cubic decimeters, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon to cubic decimeter?
Multiply the teaspoon value by 0.004928921594. The converter above does this instantly to whatever precision you set.
How do I convert cubic decimeter back to teaspoon?
Use the reverse factor: 1 cubic decimeter equals 202.8841362 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 cubic decimeter?
Cubic Decimeter (dm3) is a unit of volume.
Is the teaspoon to cubic decimeter conversion exact?
Yes. The US teaspoon is exactly 4.92892159375 milliliters — 1/3 of a US tablespoon and 1/48 of a US cup. 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)