Convert tbsp to tsp
Convert tbsp to tsp instantly. 1 tbsp = 3 tsp. Formula, worked examples and a quick reference table.
Last updated
One us tablespoon equals 3 us teaspoons. To convert any number of us tablespoons to us teaspoons, multiply by 3.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Volume is the category where the US and imperial systems diverge most damagingly. Gallons, quarts, pints and fluid ounces all exist in two sizes that differ by up to 20%, and nothing in the name warns you which one a figure uses. Recipes, fuel economy figures and container capacities all cross borders regularly, so it is worth checking which system a source is using before converting rather than after.
tbsp to tsp formula
To go the other way, use us tablespoon = us teaspoon ÷ 3.
About these units
A tablespoon is three teaspoons in the US and UK, at about 14.8 ml, but 20 ml in Australia — a difference large enough to matter for anything strongly flavoured.
A US teaspoon is 4.93 millilitres, rounded to 5 ml almost everywhere in practice. Australian tablespoons are the outlier at 20 ml rather than 15.
US Tablespoon is also written tablespoons, tbs and tbsps. US Teaspoon is also written teaspoons and tsps.
Sources
tbsp to tsp conversion table
| US Tablespoon | US Teaspoon |
|---|---|
| 1 tbsp | 3 tsp |
| 2 tbsp | 6 tsp |
| 3 tbsp | 9 tsp |
| 5 tbsp | 15 tsp |
| 10 tbsp | 30 tsp |
| 20 tbsp | 60 tsp |
| 25 tbsp | 75 tsp |
| 50 tbsp | 150 tsp |
| 100 tbsp | 300 tsp |
| 250 tbsp | 750 tsp |
| 500 tbsp | 1,500 tsp |
| 1,000 tbsp | 3,000 tsp |
Frequently asked questions
How many us teaspoons are in a us tablespoon? +
There are 3 us teaspoons in one us tablespoon.
What is 10 tbsp in tsp? +
10 tbsp equals 30 tsp. Multiply 10 by 3.
How do I convert us teaspoon back to us tablespoon? +
Use us tablespoon = us teaspoon ÷ 3. The converter above handles both directions, or see our dedicated tsp to tbsp page.
How accurate is this us tablespoon to us teaspoon conversion? +
The factor used is 3, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate tbsp to tsp in my head? +
Multiply by 3. That matches the true factor of 3 exactly, so no adjustment is needed for a mental estimate.