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Exact relationship and formula
1 U.S. tablespoon = 3 U.S. teaspoons. Tablespoons = teaspoons ÷ 3.
Reverse mode applies the inverse relationship from the same definition.
Worked example
1 U.S. tsp = 0.333333333333 U.S. tbsp = 1/3 tablespoon; 1.5 tsp = 1/2 tablespoon.
This calculator uses U.S. customary cooking units. International teaspoon and tablespoon definitions can differ.
Common u.s. teaspoons reference values
| U.S. teaspoons | Conversion |
|---|---|
| 1 US tsp | 0.333333333333 US tbsp |
| 1.5 US tsp | 0.5 US tbsp |
| 3 US tsp | 1 US tbsp |
| 6 US tsp | 2 US tbsp |
| 9 US tsp | 3 US tbsp |
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