Tablespoons to Teaspoons Converter (tbsp to tsp)
1 tbsp = 3 tsp exactly in US measures. Convert tablespoons to teaspoons when scaling recipes down or reading label servings, with tbsp and tsp charts.
Teaspoon (tsp) = Tablespoon (tbsp) × 3
US customary volumes; ingredient estimates use 125 g flour, 200 g granulated sugar and 226.796185 g butter per cup. Ingredient-to-ingredient results compare equal volumes, not recipe substitutions.
Tablespoon (tbsp): The US tablespoon is half a US fluid ounce, exactly 14.78676478125 mL, and holds 3 teaspoons; 16 tablespoons make a cup. An Australian tablespoon is larger at 20 mL, so check which one a recipe uses.
Teaspoon (tsp): The US customary teaspoon is one sixth of a US fluid ounce, exactly 4.92892159375 mL, and 3 teaspoons make a tablespoon. This differs from a rounded metric measuring teaspoon of 5 mL.
| Tablespoon (tbsp) | Teaspoon (tsp) |
|---|---|
| 1 | 3 |
| 5 | 15 |
| 10 | 30 |
| 25 | 75 |
| 50 | 150 |
| 100 | 300 |
A US tablespoon is defined as exactly three teaspoons: half a US fluid ounce against a sixth of one. Converting is a multiplication by 3, and it is needed most when a recipe is scaled down. Halving a dish that calls for 1 tablespoon of soy sauce leaves ½ tablespoon, which is easier to measure as 1½ teaspoons, since many spoon sets have no half-tablespoon.
Spoon sizes are not the same everywhere. Measuring tablespoons in the UK, Canada and New Zealand, and the tablespoon used on US nutrition labels, hold 15 mL, almost the same as the US customary 14.8 mL. Australia uses a 20 mL tablespoon, which holds four 5 mL teaspoons rather than three, so one Australian tablespoon is about 1.35 US tablespoons, or roughly 4 US teaspoons.
How to use this tool
- Type a value in the Tablespoon box to see it in teaspoons, or type in the Teaspoon box to convert the other way.
- Press ⇄ to swap the two units, or Load example for a typical value.
- Check the charts below for common values; for other units, open the Cooking Measure converter.
Formula
Teaspoon (tsp) = Tablespoon (tbsp) × 3
Tablespoon (tbsp) = Teaspoon (tsp) × 0.333333333333
Both factors come from the converter's own definitions: 1 teaspoon = 0.333333333333 tablespoons and 1 tablespoon = 3 teaspoons (shown to 12 significant digits).
Example
Two conversions worked with the same factors the converter uses:
1.5 tbsp = 4.5 tsp
10 tsp ≈ 3.33333 tbsp
Tablespoon to Teaspoon chart
Common values from tablespoons to teaspoons, rounded to four decimal places.
| Tablespoon (tbsp) | Teaspoon (tsp) |
|---|---|
| 0.25 | 0.75 |
| 0.3333 | 1 |
| 0.5 | 1.5 |
| 0.6667 | 2 |
| 0.75 | 2.25 |
| 1 | 3 |
| 1.25 | 3.75 |
| 1.5 | 4.5 |
| 2 | 6 |
| 2.5 | 7.5 |
| 3 | 9 |
| 4 | 12 |
| 5 | 15 |
| 6 | 18 |
| 8 | 24 |
| 10 | 30 |
| 12 | 36 |
| 16 | 48 |
Teaspoon to Tablespoon chart
The reverse direction for values people often look up.
| Teaspoon (tsp) | Tablespoon (tbsp) |
|---|---|
| 0.25 | 0.0833 |
| 0.5 | 0.1667 |
| 1 | 0.3333 |
| 1.5 | 0.5 |
| 2 | 0.6667 |
| 2.5 | 0.8333 |
| 3 | 1 |
| 4 | 1.3333 |
| 5 | 1.6667 |
| 6 | 2 |
| 9 | 3 |
| 12 | 4 |
| 24 | 8 |
| 48 | 16 |
Tablespoon servings and spoon sizes
| Item | Tablespoon (tbsp) | Teaspoon (tsp) |
|---|---|---|
| Oil or butter serving on a US Nutrition Facts label | 1 | 3 |
| Honey or jam serving on a US label | 1 | 3 |
| Metric tablespoon of 15 mL (UK, Canada, US labels) | 1.0144 | 3.0433 |
| Australian tablespoon of 20 mL | 1.3526 | 4.0577 |
| Peanut butter serving on a US label | 2 | 6 |
| Salad dressing serving on a US label | 2 | 6 |
| Stick of butter, by its wrapper marks | 8 | 24 |
Quick mental estimate
Multiply by 3, and for fractions remember that ⅓ tablespoon is exactly 1 teaspoon: 2⅓ tbsp → 6 + 1 = 7 tsp, and 1½ tbsp → 4½ tsp. Nothing is rounded, so the method is exact.
Use the converter or the charts when the exact figure matters.
The two units
Tablespoon (tbsp): The US tablespoon is half a US fluid ounce, exactly 14.78676478125 mL, and holds 3 teaspoons; 16 tablespoons make a cup. An Australian tablespoon is larger at 20 mL, so check which one a recipe uses.
Teaspoon (tsp): The US customary teaspoon is one sixth of a US fluid ounce, exactly 4.92892159375 mL, and 3 teaspoons make a tablespoon. This differs from a rounded metric measuring teaspoon of 5 mL.
Frequently asked questions
How many teaspoons are in a tablespoon?
Three, both in US measures and in the 15 mL metric spoons used in the UK, Canada and New Zealand. The exception is Australia, whose 20 mL tablespoon holds four metric teaspoons.
How do I measure half a tablespoon?
Use 1½ teaspoons: the teaspoon once and the half-teaspoon once. For a quarter tablespoon, use ¾ teaspoon, which is a half-teaspoon plus a quarter-teaspoon.
Is a tablespoon from the cutlery drawer the same as a measuring tablespoon?
No. Eating spoons are not made to a standard size, so they can hold noticeably more or less than 3 teaspoons. Use measuring spoons for cooking, and for medicine use the dosing device that comes with it.
How precise is the result?
The converter uses the exact definitions above with browser floating-point arithmetic and shows up to 12 significant digits. The charts round to four decimal places for reading.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/tablespoon-cooking-to-teaspoon-cooking-converter/
Cite or embed this tool
kakaoCalc. (2026, November 8). Tablespoons to Teaspoons Converter (tbsp to tsp). https://kakao.mobile/tools/tablespoon-cooking-to-teaspoon-cooking-converter/
“Tablespoons to Teaspoons Converter (tbsp to tsp).” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/tablespoon-cooking-to-teaspoon-cooking-converter/.
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