US tablespoons to US teaspoons
Convert US tablespoons to US teaspoons instantly.
US tablespoons to US teaspoons (tbsp (US) to tsp (US)) Converter
1 US tablespoon = 3 US teaspoons
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- 1 tbsp (US) = 3 tsp (US)
- 5 tbsp (US) = 15 tsp (US)
- 10 tbsp (US) = 30 tsp (US)
- 25 tbsp (US) = 75 tsp (US)
- US cupscup (US)
- US tablespoonstbsp (US)
- MillilitresmL
- US cupscup (US)
- US teaspoonstsp (US)
- MillilitresmL
How it’s calculated
tsp (US) = tbsp (US) × 3
- Multiply the value in US tablespoons by 3.
- To go back, divide by 3 (or multiply by 0.3333333333).
- 1 tbsp (US) = 3 tsp (US) · 1 tsp (US) = 0.3333333333 tbsp (US)
Quick examples
1 US tablespoon = 3 US teaspoons · 1 tsp (US) = 0.33333 tbsp (US)
- 1 US tablespoon = 3 US teaspoons
- 5 US tablespoons = 15 US teaspoons
- 10 US tablespoons = 30 US teaspoons
- 25 US tablespoons = 75 US teaspoons
- 100 US tablespoons = 300 US teaspoons
US tablespoons to US teaspoons conversion table
| US tablespoons (tbsp (US)) | US teaspoons (tsp (US)) |
|---|---|
| 0.125 tbsp (US) | 0.375 tsp (US) |
| 0.25 tbsp (US) | 0.75 tsp (US) |
| 0.3333333333 tbsp (US) | 1 tsp (US) |
| 0.5 tbsp (US) | 1.5 tsp (US) |
| 0.6666666667 tbsp (US) | 2 tsp (US) |
| 0.75 tbsp (US) | 2.25 tsp (US) |
| 1 tbsp (US) | 3 tsp (US) |
| 1.5 tbsp (US) | 4.5 tsp (US) |
| 2 tbsp (US) | 6 tsp (US) |
| 3 tbsp (US) | 9 tsp (US) |
| 4 tbsp (US) | 12 tsp (US) |
| 5 tbsp (US) | 15 tsp (US) |
| 6 tbsp (US) | 18 tsp (US) |
| 8 tbsp (US) | 24 tsp (US) |
About these units
US tablespoon (tbsp (US))
US customary
1 tbsp (US) ≈ 0.000014786765 m³
1/2 US fl oz = 14.78676478125 mL.
Source: NIST SP 811 / Handbook 44
US teaspoon (tsp (US))
US customary
1 tsp (US) = 0.00000492892159375 m³ (exact)
1/3 US tablespoon = 4.92892159375 mL.
Source: NIST SP 811 / Handbook 44
Frequently asked questions
How do I convert US tablespoons to US teaspoons?
Use tsp (US) = tbsp (US) × 3. Multiply the value in US tablespoons by 3.
How many US teaspoons are in 1 US tablespoon?
1 US tablespoon (tbsp (US)) equals 3 US teaspoons (tsp (US)).
How many US tablespoons are in 1 US teaspoon?
1 US teaspoon (tsp (US)) equals 0.33333 US tablespoons (tbsp (US)); more precisely 0.3333333333.
What is 10 tbsp (US) in tsp (US)?
10 US tablespoons = 30 US teaspoons.
Is the US tablespoon a US or a UK unit?
This converter uses the US customary US tablespoon. 1/2 US fl oz = 14.78676478125 mL. US and UK units with the same name can differ, so check which one your source uses.
Is the US teaspoon a US or a UK unit?
This converter uses the US customary US teaspoon. 1/3 US tablespoon = 4.92892159375 mL. US and UK units with the same name can differ, so check which one your source uses.
What is a US tablespoon?
1/2 US fl oz = 14.78676478125 mL.
Related conversions
Formula: tsp (US) = tbsp (US) × 3. Factors last reviewed 2026-10-27.