US Teaspoons to Cubic Inches
Convert us teaspoons to cubic inches instantly. 1 tsp = 0.30078125 in³. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert us teaspoons to cubic inches
To convert us teaspoons to cubic inches, divide by 3.3246753247 (multiply by 0.30078125). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
in³ = tsp × 0.30078125
US Teaspoons to Cubic Inches conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| US Teaspoons | Cubic Inches |
|---|---|
| 1 tsp | 0.300781 in³ |
| 2 tsp | 0.601562 in³ |
| 3 tsp | 0.902344 in³ |
| 5 tsp | 1.503906 in³ |
| 10 tsp | 3.007812 in³ |
| 20 tsp | 6.015625 in³ |
| 25 tsp | 7.519531 in³ |
| 50 tsp | 15.039062 in³ |
| 100 tsp | 30.078125 in³ |
| 500 tsp | 150.390625 in³ |
| 1,000 tsp | 300.78125 in³ |
What is a us teaspoon?
About 4.93 mL. The smallest standard US kitchen measure.
What is a cubic inch?
Exactly 16.387064 mL. The classic US engine-displacement unit.
The formula
in³ = tsp × 0.30078125
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the US Teaspoons to Cubic Inches
- Type the number of us teaspoons you want to convert.
- Read the result in cubic inches straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked cubic inches to us teaspoons page.
US Teaspoons to Cubic Inches — frequently asked questions
How many cubic inches are in a us teaspoon?
One us teaspoon equals 0.30078125 in³. in³ = tsp × 0.30078125
What is the formula to convert us teaspoons to cubic inches?
The formula is in³ = tsp × 0.30078125. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert cubic inches back to us teaspoons?
Divide instead of multiplying: one cubic inch is 3.3246753247 tsp. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this us teaspoons to cubic inches free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the us teaspoons to cubic inches.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error