Convert Tablespoons (tbsp) to Teaspoons (tsp)

Q: How many teaspoons are in 2 tablespoons?

6 teaspoons (2 × 3). This equals 1 fluid ounce or 30 mL.

Q: How many teaspoons in a tablespoon?

Exactly 3 teaspoons. This is true in both the US customary system and the metric system.

Q: How many tablespoons in a cup?

16 tablespoons = 1 cup (48 teaspoons). So ¼ cup = 4 tbsp = 12 tsp, ½ cup = 8 tbsp = 24 tsp.

Q: Is a tablespoon 15 mL or 14.79 mL?

The metric tablespoon = exactly 15 mL (used in most countries). The US customary tablespoon = 14.787 mL. The difference is negligible for cooking (1.4%).

1 Tablespoon equals 3 Teaspoons.

Formula: tsp = tbsp × 3

Tablespoon to Teaspoon Converter

What Is a Tablespoon?

The US tablespoon (tbsp) is a customary unit of volume equal to 3 teaspoons, ½ fluid ounce, or approximately 14.787 mL. In the metric system, the tablespoon is standardized at exactly 15 mL. It is a fundamental cooking measure used in recipes worldwide.

What Is a Teaspoon?

The US teaspoon (tsp) is a customary unit of volume equal to ⅓ tablespoon, ⅙ fluid ounce, or approximately 4.929 mL. The metric teaspoon is exactly 5 mL — the standard dosing measure recommended by the FDA for liquid medications.

Tablespoons to Teaspoons Formula

The conversion is exact by definition:

teaspoons = tablespoons × 3

This is exact in both the US customary system and the metric system (15 mL ÷ 5 mL = 3).

Worked Example

Convert 2.5 tablespoons of vanilla extract to teaspoons:

Multiply: 2.5 × 3 = 7.5 teaspoons

Common Tablespoons to Teaspoons Conversions

Tablespoons	Teaspoons	Also Equals
¼ tbsp	¾ tsp	3.75 mL
½ tbsp	1½ tsp	7.5 mL
¾ tbsp	2¼ tsp	11.25 mL
1 tbsp	3 tsp	15 mL / ½ fl oz
1½ tbsp	4½ tsp	22.5 mL
2 tbsp	6 tsp	30 mL / 1 fl oz
3 tbsp	9 tsp	45 mL / 1½ fl oz
4 tbsp	12 tsp	¼ cup / 60 mL
5 tbsp	15 tsp	75 mL
8 tbsp	24 tsp	½ cup / 120 mL
16 tbsp	48 tsp	1 cup / 240 mL

When You Need This Conversion

Baking precision: A recipe calls for ½ tablespoon of baking powder — that is 1½ teaspoons. Using the exact amount matters for leavening.
Scaling recipes: Halving a recipe that calls for 1 tbsp of salt means using 1½ tsp. The ×3 relationship makes this simple.
Medication: Some OTC medications list doses in tablespoons or teaspoons. 1 tablespoon dose = 3 teaspoons = approximately 15 mL.

Frequently Asked Questions

How many teaspoons are in 2 tablespoons?

6 teaspoons (2 × 3). This equals 1 fluid ounce or 30 mL.

How many teaspoons in a tablespoon?

Exactly 3 teaspoons. This is true in both the US customary system and the metric system.

How many tablespoons in a cup?

16 tablespoons = 1 cup (48 teaspoons). So ¼ cup = 4 tbsp = 12 tsp, ½ cup = 8 tbsp = 24 tsp.

What is the difference between a tablespoon and a dessert spoon?

A US/metric tablespoon = 15 mL. A dessert spoon (used in UK and Australia) = 10 mL — two-thirds of a tablespoon. They are not interchangeable.

Is a tablespoon 15 mL or 14.79 mL?

The metric tablespoon = exactly 15 mL (used in most countries). The US customary tablespoon = 14.787 mL. The difference is negligible for cooking (1.4%).

Cooking Notes & Cross-References

See our complete Cooking Measurement Guide for a quick-reference chart with all cup, tablespoon, and teaspoon equivalencies.

Need to convert the other way? Use our Teaspoons to Tablespoons converter.

Common Tablespoon to Teaspoon Conversions

Tablespoon to Teaspoon (Part 1)

Tablespoon	Teaspoon	Actions
1 Tablespoon	3 Teaspoons
2 Tablespoons	6 Teaspoons
3 Tablespoons	9 Teaspoons

Tablespoon to Teaspoon (Part 2)

Tablespoon	Teaspoon	Actions
4 Tablespoons	12 Teaspoons
5 Tablespoons	15 Teaspoons
10 Tablespoons	30 Teaspoons

Tablespoons to Teaspoons Conversion Table

Reference table with common tablespoons to teaspoons conversions. All values calculated with high precision.

Tablespoons to Teaspoons Table
0.0001 to 12

Tablespoons	Teaspoons	Actions
0.0001 tbsp	0.0003 tsp
0.00025 tbsp	0.00075 tsp
0.0005 tbsp	0.0015 tsp
0.001 tbsp	0.003 tsp
0.0025 tbsp	0.0075 tsp
0.005 tbsp	0.015 tsp
0.01 tbsp	0.03 tsp
0.025 tbsp	0.075 tsp
0.05 tbsp	0.15 tsp
0.1 tbsp	0.3 tsp
14 tbsp	34 tsp
12 tbsp	1 12 tsp

Tablespoons to Teaspoons Table
1 to 100000

Tablespoons	Teaspoons	Actions
1 tbsp	3 tsp
2 12 tbsp	7 12 tsp
5 tbsp	15 tsp
10 tbsp	30 tsp
25 tbsp	75 tsp
50 tbsp	150 tsp
100 tbsp	300 tsp
250 tbsp	750 tsp
500 tbsp	1500 tsp
1000 tbsp	3000 tsp
2500 tbsp	7500 tsp
5000 tbsp	15000 tsp
10000 tbsp	30000 tsp
25000 tbsp	75000 tsp
50000 tbsp	150000 tsp
100000 tbsp	300000 tsp

Teaspoons to Tablespoons Table
0.001 to 5

Teaspoons	Tablespoons	Actions
0.001 tsp	0.000333333 tbsp
0.0025 tsp	0.000833333 tbsp
0.005 tsp	0.00166667 tbsp
0.01 tsp	0.00333333 tbsp
0.025 tsp	0.00833333 tbsp
0.05 tsp	0.0166667 tbsp
0.1 tsp	0.0333333 tbsp
14 tsp	112 tbsp
12 tsp	16 tbsp
1 tsp	13 tbsp
2 12 tsp	0.833333 tbsp
5 tsp	1 23 tbsp

Teaspoons to Tablespoons Table
10 to 1000000

Teaspoons	Tablespoons	Actions
10 tsp	3 13 tbsp
25 tsp	8 13 tbsp
50 tsp	16.6667 tbsp
100 tsp	33.3333 tbsp
250 tsp	83.3333 tbsp
500 tsp	166.667 tbsp
1000 tsp	333.333 tbsp
2500 tsp	833.333 tbsp
5000 tsp	1666.67 tbsp
10000 tsp	3333.33 tbsp
25000 tsp	8333.33 tbsp
50000 tsp	16666.7 tbsp
100000 tsp	33333.3 tbsp
250000 tsp	83333.3 tbsp
500000 tsp	166667 tbsp
1000000 tsp	333333 tbsp

Looking for the reverse? Convert Teaspoon to Tablespoon

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Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026

By Adilson Fernandes

Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.