A US teaspoon is one third of a US tablespoon.
Teaspoons to Cubic Millimeters Converter — tsp to mm3
Convert Teaspoon (tsp) to Cubic Millimeter (mm3) using the exact conversion factor (1 teaspoon = 4,928.921594 cubic millimeter). See the formula, worked examples, conversion table, and common uses.
Teaspoons to Cubic Millimeters 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 / 1e-9.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Teaspoons to Cubic Millimeters
Teaspoon and Cubic Millimeter 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 millimeters = teaspoons × 4928.92159375
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 millimeter equals 1e-9 base units, so dividing one by the other gives the direct teaspoon-to-cubic millimeter factor of 4928.92159375.
Simple example
1 tsp × 4928.921594 = 4,928.921594 mm3
1 teaspoon = 4,928.921594 cubic millimeters.
Real-world example
10 tsp × 4928.921594 = 49,289.21594 mm3
10 teaspoons = 49,289.21594 cubic millimeters.
Conversion table
| Teaspoon (tsp) | Cubic Millimeter (mm3) |
|---|---|
| 1 tsp | 4,928.921594 mm3 |
| 5 tsp | 24,644.60797 mm3 |
| 10 tsp | 49,289.21594 mm3 |
| 25 tsp | 123,223.0398 mm3 |
| 50 tsp | 246,446.0797 mm3 |
| 100 tsp | 492,892.1594 mm3 |
Reverse conversion: Cubic Millimeter to Teaspoon
1 mm3 × 0.0002028841362 = 0.0002028841 tsp
1 cubic millimeter = 0.0002028841 teaspoons.
teaspoons = cubic millimeters × 0.000202884136211
For a page dedicated to this direction, see Cubic Millimeter 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 Millimeter (mm3)
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 millimeters are in 1 teaspoon?
1 teaspoon equals 4,928.921594 cubic millimeters, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon to cubic millimeter?
Multiply the teaspoon value by 4928.921594. The converter above does this instantly to whatever precision you set.
How do I convert cubic millimeter back to teaspoon?
Use the reverse factor: 1 cubic millimeter equals 0.0002028841 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 millimeter?
Cubic Millimeter (mm3) is a unit of volume.
Is the teaspoon to cubic millimeter 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)