Convert US Teaspoon to Cubic Decimeter
Convert us teaspoons to cubic decimeters instantly. 1 us teaspoon = 0.0049289216 cubic decimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Decimeter to US Teaspoon converter for the reverse conversion.
Units explained
US Teaspoon
A US teaspoon is one third of a US tablespoon (4.9289 mL).
A standardized small cooking measure.
Used everywhere in US recipes and home dosing.
US cooking measure.
Cubic Decimeter
A cubic decimeter is the volume of a cube one decimeter on a side, exactly equal to one liter (0.001 m³).
Derived from the decimeter; in 1964 the CGPM defined the liter as exactly one cubic decimeter.
Common in chemistry and engineering as an exact synonym for the liter.
CGPM, 1964.
US Teaspoon to Cubic Decimeter conversion formula
The relationship between us teaspoons and cubic decimeters:
To convert us teaspoons to cubic decimeters, multiply the value in us teaspoons by 0.0049289216. To reverse, multiply cubic decimeters by 202.8841362111.
How to use this converter
Type a value into the calculator. The result in cubic decimeters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Decimeter to US Teaspoon converter for the reverse direction.
Step-by-step: convert us teaspoons to cubic decimeters
- Write down the value in us teaspoons (tsp).
- Multiply that value by the factor 0.0049289216.
- The product is the equivalent value in cubic decimeters (dm³).
- To reverse, multiply the cubic decimeter value by 202.8841362111.
Worked examples
Example 1 — Convert 1 tsp to dm³:
1 × 0.0049289216 = 0.0049289216 dm³
Example 2 — Convert 100 tsp to dm³:
100 × 0.0049289216 = 0.4928921594 dm³
Real-world example — Packaging gauge
A 4-us teaspoon plastic bag thickness is a common spec for grocery and freezer bags. Converting from us teaspoons to cubic decimeters is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 tsp × 0.0049289216 = 0.0197156864 dm³
Real-world example — Plastic film and laminate thickness
A 500-us teaspoon sheet is a typical spec for ID-card laminates and film overlays. Converting to cubic decimeters aligns the value with the unit most CAD systems and material datasheets prefer.
500 tsp × 0.0049289216 = 2.4644607969 dm³
US Teaspoon to Cubic Decimeter conversion table
Standard reference values for converting us teaspoons to cubic decimeters:
| US Teaspoon [tsp] | Cubic Decimeter [dm³] |
|---|---|
| 0.01 | 4.928922e-5 |
| 0.1 | 0.0004928922 |
| 1 | 0.0049289216 |
| 2 | 0.0098578432 |
| 3 | 0.0147867648 |
| 4 | 0.0197156864 |
| 5 | 0.024644608 |
| 10 | 0.0492892159 |
| 20 | 0.0985784319 |
| 30 | 0.1478676478 |
| 40 | 0.1971568637 |
| 50 | 0.2464460797 |
| 100 | 0.4928921594 |
| 500 | 2.4644607969 |
| 1000 | 4.9289215938 |
Frequently asked questions
How many cubic decimeters is 1 us teaspoon?
How do I convert us teaspoons to cubic decimeters?
How do I convert cubic decimeters back to us teaspoons?
How many cubic decimeters is 100 us teaspoons?
Popular volume unit conversions
Convert US Teaspoon to other volume units
Show all US Teaspoon conversions
Metric / SI (8 units)
US Customary (Liquid) (7 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 tsp = 0.0049289216 dm³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.