---
title: "Teaspoons to Cubic inches — tsp to in³ converter"
description: "1 teaspoon = 0.30078 cubic inches. Convert teaspoons to cubic inches with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/teaspoons-to-cubic-inches/
site: "At One Place"
---

# Teaspoons to cubic inches

**1 teaspoon in cubic inches: 1 tsp = 0.30078 in³**

in³ = tsp × 0.30078125

To convert teaspoons to cubic inches, multiply by 0.30078125. The table below gives the values people look up most often, and the converter works for any number.

## Teaspoons to cubic inches table

*Common teaspoon values converted to cubic inches.*

| Teaspoons | Cubic inches |
| --- | --- |
| 1 tsp | 0.30078 |
| 2 tsp | 0.60156 |
| 3 tsp | 0.90234 |
| 4 tsp | 1.203125 |
| 5 tsp | 1.503906 |
| 10 tsp | 3.007813 |
| 15 tsp | 4.511719 |
| 20 tsp | 6.015625 |
| 25 tsp | 7.519531 |
| 30 tsp | 9.023438 |
| 40 tsp | 12.03125 |
| 50 tsp | 15.03906 |
| 75 tsp | 22.55859 |
| 100 tsp | 30.07812 |
| 250 tsp | 75.19531 |
| 500 tsp | 150.3906 |
| 1,000 tsp | 300.7813 |

## How the conversion works

The relationship is in³ = tsp × 0.30078125. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

## Common questions

### How many cubic inches are in one teaspoon?

One teaspoon equals 0.30078 cubic inches. in³ = tsp × 0.30078125.

### How do you convert teaspoons to cubic inches?

Use in³ = tsp × 0.30078125. So 10 tsp is 3.007813 in³.

### How many teaspoons are in one cubic inch?

One cubic inch equals 3.324675 teaspoons, which is the reverse of the conversion above.

## Related pages

- [Cubic inches to Teaspoons](https://atoneplace.net/convert/cubic-inches-to-teaspoons/)
- [Teaspoons to Liters](https://atoneplace.net/convert/teaspoons-to-liters/)
- [Teaspoons to Milliliters](https://atoneplace.net/convert/teaspoons-to-ml/)
- [Teaspoons to Cubic meters](https://atoneplace.net/convert/teaspoons-to-cubic-meters/)
- [Teaspoons to US gallons](https://atoneplace.net/convert/teaspoons-to-gallons/)
- [Teaspoons to US quarts](https://atoneplace.net/convert/teaspoons-to-quarts/)
- [Teaspoons to US pints](https://atoneplace.net/convert/teaspoons-to-pints/)
- [Teaspoons to US cups](https://atoneplace.net/convert/teaspoons-to-cups/)
- [Teaspoons to US fluid ounces](https://atoneplace.net/convert/teaspoons-to-fl-oz/)
- [Teaspoons to Tablespoons](https://atoneplace.net/convert/teaspoons-to-tablespoons/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)