Convert 15 tbsp to tsp

How to convert tablespoons to teaspoons

1. Formula: teaspoons = tablespoons × 3
2. Put in the value: 15 tablespoons.
3. Result: 45 teaspoons.

Tablespoons to teaspoons table

Converting the other way: teaspoons to tablespoons

tablespoons = teaspoons × 0.33333333. So 45 teaspoons is back to 15 tablespoons; one teaspoon is 0.33333333 tablespoons. See the teaspoons to tablespoons table.

Quick estimate in your head

For a rough answer, multiply by about 3: 15 × 3 ≈ 45 tsp, against the exact 45 tsp (0.0% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A tablespoon is bigger than a teaspoon, so the number of teaspoons must come out larger than the number of tablespoons. If your answer goes the other way, divide instead of multiplying.

About the units

Tablespoon (tbsp) and teaspoon (tsp) are both units of volume. One tablespoon equals 3 teaspoons, and one teaspoon equals 0.33333333 tablespoons. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.

15 tablespoons in other units

The most readable unit for this amount is US fluid ounces (7.5).

• 221.801472 ml
• 0.22180147 l
• 0.0002218 m3
• 45 tsp
• 7.5 floz
• 0.9375 cup
• 0.46875 pt
• 0.234375 qt
• 0.05859375 gal
• 0.0487895 impgal