Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 tsp | 0.00030078 in³ | |
| 0.01 tsp | 0.0030078 in³ | |
| 0.1 tsp | 0.030078 in³ | |
| 1 tsp | 0.30078 in³ | |
| 5 tsp | 1.5039 in³ | |
| 10 tsp | 3.0078 in³ | |
| 50 tsp | 15.039 in³ | |
| 100 tsp | 30.078 in³ | |
| 1000 tsp | 300.78 in³ |
Common teaspoon values converted to cubic inch — factor: 1 tsp = 0.3008 in³
| Teaspoon (tsp) | Cubic Inch (in³) | Context |
|---|---|---|
| 0.25 tsp | 0.0752 in³ | Pinch |
| 0.5 tsp | 0.1504 in³ | Half teaspoon |
| 1 tsp | 0.3008 in³ | Teaspoon |
| 2 tsp | 0.6016 in³ | Two teaspoons |
| 3 tsp | 0.9023 in³ | Tablespoon |
| 6 tsp | 1.805 in³ | 2 tablespoons |
| 12 tsp | 3.609 in³ | Quarter cup |
| 24 tsp | 7.219 in³ | Half cup |
| 48 tsp | 14.44 in³ | One cup |
| 96 tsp | 28.87 in³ | One pint |
| 192 tsp | 57.75 in³ | One quart |
| 384 tsp | 115.5 in³ | Half gallon |
| 768 tsp | 231 in³ | One gallon |
| 1,536 tsp | 462 in³ | 2 gallons |
| 3,840 tsp | 1,155 in³ | 5 gallons |
Converting teaspoon to cubic inch comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using cubic inch, or a laboratory protocol may specify volumes in teaspoon that need to be measured with equipment calibrated in cubic inch.
In everyday use, knowing that 5 tsp = 1.504 in³ and 10 tsp = 3.008 in³ covers most common situations. For bulk calculations, 100 tsp = 30.08 in³ is a useful anchor. The reverse conversion — cubic inch back to teaspoon — uses the factor 3.325, so 1 in³ = 3.325 tsp.
All conversions use the internationally recognized factor of exactly 1 tsp = 0.3008 in³. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Cubic Inch = Teaspoon × 0.30078049
Multiply any teaspoon value by 0.30078049 to get cubic inch. One teaspoon equals 0.30078049 in³.
Reverse: Teaspoon = Cubic Inch × 3.3246837
1 tsp = 0.30078049 in³. Memorize this for instant mental estimates.
Use 0.3008 as a quick mental factor. Multiply your teaspoons value by this to estimate cubic inches.
To verify: multiply your result by 3.3246837 to recover the original tsp value.
Measures baking powder, baking soda, salt, and spices in teaspoons, the backbone of baking.
Administers children's liquid medicine in teaspoon doses as per OTC label instructions.
Tests flavor compound thresholds using teaspoon additions in sensory evaluation panels.
Adds clarifying agents and pH adjusters in teaspoon quantities to fermentation batches.
Formulates serums and toners using teaspoon measurements for small test batches.
Doses water conditioners and fertilizers in teaspoons for planted tanks and reef systems.
The US teaspoon is exactly one-third of a tablespoon, 4.92892 mL. It was standardized in the US in the early 20th century partly to address inconsistent home medication dosing.
Teaspoons are the smallest standard cooking measure in the US system, used for spices, leaveners, and flavorings. A medical teaspoon dose conventionally means 5 mL.
Interesting fact: The teaspoon is behind one of science's most cited comparisons: the entire Pacific Ocean would fill roughly 7.1 × 10²³ teaspoons.
The cubic inch is the volume of a cube with one-inch sides, equal to exactly 16.387064 mL. It belongs to US customary and British Imperial systems, in practical use since the 17th century.
Cubic inches appear most often in engine displacement for small engines and in precision machining for material volume calculations.
Interesting fact: A standard 12-fluid-ounce US soda can has a volume of about 21.7 cubic inches.