A metric teaspoon is 5 milliliters.
Metric teaspoons to Tablespoons Converter — metric tsp to tbsp
Convert Metric teaspoon (metric tsp) to Tablespoon (tbsp) using the exact conversion factor (1 metric teaspoon = 0.338140227 tablespoon). See the formula, worked examples, conversion table, and common uses.
Metric teaspoons to Tablespoons converter
Converter
Cooking Converter
Convert cooking volume and mass units used in recipes and nutrition workflows.
Context values
Some unit families need one extra value for a physically accurate result.
A US tablespoon is half a US fluid ounce.
Result = input x 5e-6 / 1.47867648e-5.
Volume units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Metric teaspoons to Tablespoons
Metric teaspoon and Tablespoon both show up in recipes, and converting between them matters whenever a recipe from one country's cookbook needs to be followed with another country's measuring tools. Specifically: A metric teaspoon is 5 milliliters, and a US tablespoon is half a US fluid ounce.
Formula
tablespoons = metric teaspoons × 0.338140227018
This factor comes from each unit's defined relationship to the category's base unit: 1 metric teaspoon equals 0.000005 base units, and 1 tablespoon equals 0.0000147867647813 base units, so dividing one by the other gives the direct metric teaspoon-to-tablespoon factor of 0.338140227018.
Simple example
1 metric tsp × 0.338140227 = 0.338140227 tbsp
1 metric teaspoon = 0.338140227 tablespoons.
Real-world example
2 metric tsp × 0.338140227 = 0.676280454 tbsp
2 metric teaspoons = 0.676280454 tablespoons.
Conversion table
| Metric teaspoon (metric tsp) | Tablespoon (tbsp) |
|---|---|
| 0.25 metric tsp | 0.0845350568 tbsp |
| 0.5 metric tsp | 0.1690701135 tbsp |
| 1 metric tsp | 0.338140227 tbsp |
| 2 metric tsp | 0.676280454 tbsp |
| 4 metric tsp | 1.352560908 tbsp |
| 8 metric tsp | 2.705121816 tbsp |
Reverse conversion: Tablespoon to Metric teaspoon
0.338140227 tbsp × 2.957352956 = 0.9999999999 metric tsp
0.338140227 tablespoons = 0.9999999999 metric teaspoons.
metric teaspoons = tablespoons × 2.95735295625
For a page dedicated to this direction, see Tablespoon to Metric teaspoon.
Understanding the Metric teaspoon (metric tsp)
A metric teaspoon is 5 milliliters.
Understanding the Tablespoon
Tablespoon (tbsp) measures volume. The US tablespoon is exactly 14.78676478125 milliliters — 3 US teaspoons, or 1/16 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 Tablespoon today
- US recipe and cooking measurement
- Nutrition labeling serving sizes in the US
- Medication dosing instructions in the US
Tablespoon — sources
- NIST Handbook 44, Appendix C — General tables of units including the US tablespoon definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many tablespoons are in 1 metric teaspoon?
1 metric teaspoon equals 0.338140227 tablespoons, using the exact defined conversion factor rather than an estimate.
How do I convert metric teaspoon to tablespoon?
Multiply the metric teaspoon value by 0.338140227. The converter above does this instantly to whatever precision you set.
How do I convert tablespoon back to metric teaspoon?
Use the reverse factor: 1 tablespoon equals 2.957352956 metric teaspoons. You can also use the swap control in the converter above to flip the direction instantly.
What is a metric teaspoon?
Metric teaspoon (metric tsp) is a unit of cooking.
What is a tablespoon?
Tablespoon (tbsp) measures volume. The US tablespoon is exactly 14.78676478125 milliliters — 3 US teaspoons, or 1/16 of a US cup. It is classified as a US customary unit.
Is the metric teaspoon to tablespoon conversion exact?
Yes. The US tablespoon is exactly 14.78676478125 milliliters — 3 US teaspoons, or 1/16 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.