Quick Answer: Teaspoons to Tablespoons
One teaspoon is approximately 0.3333 tablespoons (1 tsp ≈ 0.3333 tbsp).
Conversely, 1 tbsp = 3 tsp.
Formula: tbsp = tsp ÷ 3
Worked examples
- 0.5 tsp ≈ 0.1667 tbsp
- 1 tsp ≈ 0.3333 tbsp
- 1.5 tsp = 0.5 tbsp
Method and limitations
Divide teaspoons by 3. US customary: 1 tbsp = 3 tsp = ½ US fl oz = 14.78676478125 mL; 1 tsp = 4.92892159375 mL. The 3:1 ratio holds in US customary and UK metric spoons (5 mL tsp, 15 mL tbsp); the Australian tablespoon is 20 mL, which is 4 teaspoons. Calculations use full-precision constants; answers in this box are rounded for readability (≈ marks a rounded value) and the calculator shows up to 9 significant figures. 1 tbsp = 3 tsp with standard measuring spoons — US spoons (4.93 mL and 14.79 mL) and metric spoons (5 mL and 15 mL) alike. The Australian tablespoon is 20 mL, which is 4 teaspoons.
Each factor is exact by definition, derived from exact definitions, or a documented conventional value — see the methodology and sources.
Conversion Formula
Divide teaspoons by 3. US customary: 1 tbsp = 3 tsp = ½ US fl oz = 14.78676478125 mL; 1 tsp = 4.92892159375 mL. The 3:1 ratio holds in US customary and UK metric spoons (5 mL tsp, 15 mL tbsp); the Australian tablespoon is 20 mL, which is 4 teaspoons.
Complete Guide to Teaspoons to Tablespoons Conversion
What is a teaspoon?
The US customary teaspoon (tsp) is ⅓ tablespoon, exactly 4.92892159375 mL. A metric teaspoon is 5 mL.
What is a tablespoon?
The US customary tablespoon (tbsp) is ½ US fl oz, exactly 14.78676478125 mL. Metric tablespoons are 15 mL (20 mL in Australia).
How the Conversion Works
tbsp = tsp ÷ 3 within one convention. Do not mix conventions in one recipe.
Step-by-Step Conversion Guide
Follow these steps to convert teaspoons to tablespoons manually:
Start with your value in teaspoons
Example: You want to convert 1.5 tsp
Apply the conversion formula
Use the formula: tbsp = tsp ÷ 3
Calculate the result
1.5 tsp = 0.5 tbsp
Verify your answer
Use our calculator above to double-check your manual calculation.
Quick Mental Math Tip
Every 3 tsp is 1 tbsp: 4½ tsp = 1½ tbsp.
Common Conversions
| Teaspoons (tsp) | Tablespoons (tbsp) | Tablespoons → Teaspoons |
|---|---|---|
| 0.5 tsp | 0.166667 | 0.5 tbsp = 1.5 tsp |
| 1 tsp | 0.333333 | 1 tbsp = 3 tsp |
| 1.5 tsp | 0.5 | 1.5 tbsp = 4.5 tsp |
| 2 tsp | 0.666667 | 2 tbsp = 6 tsp |
| 3 tsp | 1 | 3 tbsp = 9 tsp |
| 4 tsp | 1.33333 | 4 tbsp = 12 tsp |
| 5 tsp | 1.66667 | 5 tbsp = 15 tsp |
| 6 tsp | 2 | 6 tbsp = 18 tsp |
| 9 tsp | 3 | 9 tbsp = 27 tsp |
| 12 tsp | 4 | 12 tbsp = 36 tsp |
| 15 tsp | 5 | 15 tbsp = 45 tsp |
| 18 tsp | 6 | 18 tbsp = 54 tsp |
Popular Teaspoons to Tablespoons Conversions
Tap any value to load it into the calculator above.
When You'll Need This Conversion
Scaling recipes
Tripling a recipe that calls for 1 tsp gives 3 tsp, which you can measure as 1 tbsp.
Pro Tips for Accurate Conversions
Use measuring spoons
Table and tea spoons from a cutlery drawer are not standard sizes; use marked measuring spoons.
Frequently Asked Questions
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Conversion factors on this page are either exact by definition, derived from exact definitions, or conventional values in documented use. Each is listed with its source in our conversion methodology and sources, which cites the BIPM SI Brochure, NIST Special Publication 811 and the relevant IEC or national standards. Results are rounded for display only; calculations use full precision.