Tablespoons To Teaspoons Conversion (tbsp To Tsp) - Inch Calculator

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• Tablespoons to Teaspoons Converter
• How to Convert Tablespoons to Teaspoons
• How Many Teaspoons Are in a Tablespoon?
• What Is a Tablespoon?
• What Is a Teaspoon?
• Tablespoon to Teaspoon Conversion Table
• References

Person Icon By Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Sexton, J. (n.d.). Tablespoons to Teaspoons Converter. Inch Calculator. Retrieved December 14, 2025, from https://www.inchcalculator.com/convert/tablespoon-to-teaspoon/

How to Convert Tablespoons to Teaspoons

To convert a measurement in tablespoons to a measurement in teaspoons, multiply the volume by the following conversion ratio: 3 teaspoons/tablespoon.

Since one tablespoon is equal to 3 teaspoons, you can use this simple formula to convert:

teaspoons = tablespoons × 3

The volume in teaspoons is equal to the volume in tablespoons multiplied by 3.

For example, here's how to convert 5 tablespoons to teaspoons using the formula above.

teaspoons = (5 tbsp × 3) = 15 tsp

How Many Teaspoons Are in a Tablespoon?

There are 3 teaspoons in a tablespoon, which is why we use this value in the formula above.

1 tbsp = 3 tsp

For fractional tablespoons, such as finding how many teaspoons are in 1/2 tablespoon, you'll need to multiply the fraction by 3 to convert the measurement. If you have a fraction of a tablespoon, multiplying it by 3 gives you the equivalent volume in teaspoons.

Tablespoons and teaspoons are both units used to measure volume. Keep reading to learn more about each unit of measure.

What Is a Tablespoon?

A tablespoon is a unit of volume equal to three teaspoons or ½ fluid ounce.[1] One tablespoon is equal to 14.7868 milliliters, but for nutrition labeling, one tablespoon is rounded to 15 milliliters.[2]

The tablespoon is a US customary unit of volume. Tablespoons can be abbreviated as tbsp, and are also sometimes abbreviated as T, Tbls, or Tb. For example, 1 tablespoon can be written as 1 tbsp, 1 T, 1 Tbls, or 1 Tb.

Learn more about tablespoons.

What Is a Teaspoon?

The teaspoon is a unit of volume equal to 1/3 of a tablespoon or 1/6 of a fluid ounce.[3] One teaspoon is equal to approximately 4.929 milliliters, but in nutrition labeling, one teaspoon is equal to exactly 5 milliliters.[2]

The teaspoon is a US customary unit of volume. Teaspoons can be abbreviated as tsp, and are also sometimes abbreviated as t, ts, or tspn. For example, 1 teaspoon can be written as 1 tsp, 1 t, 1 ts, or 1 tspn.

Learn more about teaspoons.

Tablespoon to Teaspoon Conversion Table

Table showing various tablespoon measurements converted to teaspoons.

Tablespoons	Teaspoons
1 tbsp	3 tsp
2 tbsp	6 tsp
3 tbsp	9 tsp
4 tbsp	12 tsp
5 tbsp	15 tsp
6 tbsp	18 tsp
7 tbsp	21 tsp
8 tbsp	24 tsp
9 tbsp	27 tsp
10 tbsp	30 tsp
11 tbsp	33 tsp
12 tbsp	36 tsp
13 tbsp	39 tsp
14 tbsp	42 tsp
15 tbsp	45 tsp
16 tbsp	48 tsp
17 tbsp	51 tsp
18 tbsp	54 tsp
19 tbsp	57 tsp
20 tbsp	60 tsp
21 tbsp	63 tsp
22 tbsp	66 tsp
23 tbsp	69 tsp
24 tbsp	72 tsp
25 tbsp	75 tsp
26 tbsp	78 tsp
27 tbsp	81 tsp
28 tbsp	84 tsp
29 tbsp	87 tsp
30 tbsp	90 tsp
31 tbsp	93 tsp
32 tbsp	96 tsp
33 tbsp	99 tsp
34 tbsp	102 tsp
35 tbsp	105 tsp
36 tbsp	108 tsp
37 tbsp	111 tsp
38 tbsp	114 tsp
39 tbsp	117 tsp
40 tbsp	120 tsp

References

1. Merriam-Webster, tablespoon, https://www.merriam-webster.com/dictionary/tablespoon
2. U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures
3. Florida Department of Agriculture and Consumer Services, Cooking Conversion Guide, https://www.fdacs.gov/content/download/17165/file/P-01775.pdf

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