tsp to tbsp converter
tsp to tbsp is a division by 3: one tablespoon holds exactly three teaspoons. Enter the teaspoons and the tablespoons appear as you type, with the volume in milliliters below; tablespoons to teaspoons works in the same box.
Example: Amount 1 · Direction: Teaspoons to tablespoons → Answer: 1 tsp = 0.3333 tbsp. Source: NIST Special Publication 811, Appendix B.8: teaspoon = 4.928 922 mL, tablespoon = 1.478 676 E+01 mL, cup (U.S.) = 2.365 882 E+02 mL (read 15.10.2026). Updated: .
How it is calculated
How to convert tsp to tbsp
Tablespoons = teaspoons ÷ 3 and teaspoons = tablespoons × 3. In US measuring spoons a tablespoon is half a fluid ounce, 14.79 ml, and a teaspoon is a third of that, 4.93 ml. So 6 teaspoons are 2 tablespoons, 4 teaspoons are 1 1/3 tablespoons, and half a tablespoon is 1.5 teaspoons.
Teaspoons to tablespoons chart
| Teaspoons | Tablespoons |
|---|---|
| 1 | 0.3333 |
| 2 | 0.6667 |
| 3 | 1 |
| 4 | 1.3333 |
| 9 | 3 |
From spoons to cups
The kitchen ladder continues upward: 2 tablespoons make 1 fluid ounce, 4 tablespoons a quarter cup and 16 tablespoons (48 teaspoons) one cup. To scale a sauce up from spoons to cups, use tablespoons to cups; for liquids measured in milliliters, ml to cups.
Common mistakes
Abbreviations are easy to swap: tsp or a small t is the teaspoon, tbsp, Tbsp or a capital T is the tablespoon. Using a tablespoon where a teaspoon is meant triples the salt or baking soda. Cutlery spoons are not measuring spoons either: an everyday teaspoon from the cutlery drawer can hold noticeably more or less than 4.93 ml, so level, standard spoons give the result the recipe expects.
Frequently asked questions
How many teaspoons are in a tablespoon?
One tablespoon is exactly 3 teaspoons.
How do I convert tsp to tbsp?
Divide the teaspoons by 3: 9 tsp ÷ 3 = 3 tbsp.
Is 4 teaspoons more than a tablespoon?
Yes. 4 teaspoons are 1 1/3 tablespoons, one teaspoon more than a tablespoon.
How many ml is a teaspoon?
A US teaspoon is 4.93 ml and a tablespoon 14.79 ml; nutrition labels round them to 5 ml and 15 ml.
How many teaspoons are in a cup?
A US cup holds 48 teaspoons, which is 16 tablespoons.
Sources and legal basis
- NIST Special Publication 811, Appendix B.8: teaspoon = 4.928 922 mL, tablespoon = 1.478 676 E+01 mL, cup (U.S.) = 2.365 882 E+02 mL (read 15.10.2026)
- eCFR, 21 CFR 101.9(b)(5)(viii): for nutrition labeling a teaspoon means 5 mL, a tablespoon 15 mL, a cup 240 mL (read 15.10.2026)
As of: · Editorial policy
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