Tablespoons to Teaspoons
Type a value in either box to convert between tablespoons and teaspoons. The factor is 3.
| Tablespoons | Teaspoons |
|---|---|
| 1 tbsp | 3 tsp |
| 2 tbsp | 6 tsp |
| 3 tbsp | 9 tsp |
| 5 tbsp | 15 tsp |
| 10 tbsp | 30 tsp |
| 25 tbsp | 75 tsp |
| 50 tbsp | 150 tsp |
| 100 tbsp | 300 tsp |
How to use
- Enter a value in the Tablespoons field.
- The Teaspoons figure appears immediately — no button to press.
- Typing in the Teaspoons field converts back to Tablespoons the same way.
- Use the reference table for the values that come up most often.
Tablespoons to Teaspoons formula
To convert tablespoons to teaspoons, multiply by 3.
tsp = tbsp × 3
Put another way, one tablespoon is exactly 3 teaspoons.
Why this factor: the tablespoon and the teaspoon are both defined against the liter, so dividing one definition by the other gives 3 directly. Both definitions are set out in full below.
To go the other way, divide by 3 — or use the Teaspoons to Tablespoons converter, which is the same calculation reversed.
Worked example
Take 2 tbsp and multiply by the factor 3: the result is 6 tsp.
2 tbsp × 3 = 6 tsp
The converter above does this for any value you type, in either direction.
What is a tablespoon?
A US tablespoon is a standard cooking measure equal to three teaspoons.
Definition: Exactly half a US fluid ounce, so about 14.7868 milliliters.
Where it is used: American recipes, medication dosing instructions, and nutrition labeling.
Worth knowing: Australian tablespoons are 20 mL, not 15 — a real difference when scaling a recipe.
What is a teaspoon?
A US teaspoon is the smallest common cooking measure, one third of a tablespoon.
Definition: Exactly one sixth of a US fluid ounce, so about 4.9289 milliliters — conventionally rounded to 5 mL.
Where it is used: Recipes, spice and leavening quantities, and liquid medicine doses.
Tablespoons vs Teaspoons
The tablespoon and the teaspoon belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many teaspoons are in a tablespoon?
One tablespoon equals 3 teaspoons.
What is the formula to convert tablespoons to teaspoons?
Multiply the number of tablespoons by 3. To reverse it, divide by 3 instead.
How do I convert teaspoons back to tablespoons?
Divide by 3, which is the same as multiplying by 0.333333333.
How many teaspoons are in 10 tablespoons?
10 tbsp works out to 30 tsp.
Is there anything to watch out for with tablespoons?
Australian tablespoons are 20 mL, not 15 — a real difference when scaling a recipe.
How is the tablespoon defined?
Exactly half a US fluid ounce, so about 14.7868 milliliters.