Teaspoons To Milliliters Conversion (tsp To Ml) - Inch Calculator

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• Teaspoons to Milliliters Converter
• How to Convert Teaspoons to Milliliters
• How Many Milliliters Are in a Teaspoon?
• What Is a Teaspoon?
• What Is a Milliliter?
• Teaspoon to Milliliter 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.). Teaspoons to Milliliters Converter. Inch Calculator. Retrieved December 9, 2025, from https://www.inchcalculator.com/convert/teaspoon-to-milliliter/

How to Convert Teaspoons to Milliliters

To convert a measurement in teaspoons to a measurement in milliliters, multiply the volume by the following conversion ratio: 4.928922 milliliters/teaspoon.

Since one teaspoon is equal to 4.928922 milliliters, you can use this simple formula to convert:

milliliters = teaspoons × 4.928922

The volume in milliliters is equal to the volume in teaspoons multiplied by 4.928922.

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

milliliters = (5 tsp × 4.928922) = 24.644608 mL

How Many Milliliters Are in a Teaspoon?

There are 4.928922 milliliters in a teaspoon, which is why we use this value in the formula above.

1 tsp = 4.928922 mL

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

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.[1] 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.

What Is a Milliliter?

The milliliter is a unit of volume equal to 1 cubic centimeter, 1/1,000 of a liter, or about 0.061 cubic inches.[3]

The milliliter is an SI unit of volume in the metric system. In the metric system, "milli" is the prefix for thousandths, or 10-3. A milliliter is sometimes also referred to as a millilitre. Milliliters can be abbreviated as mL, and are also sometimes abbreviated as ml or mℓ. For example, 1 milliliter can be written as 1 mL, 1 ml, or 1 mℓ.

Since one milliliter is equivalent to one cubic centimeter, milliliters are sometimes expressed using the abbreviation for a cubic centimeter (cc) for things such as medical dosages or engine displacements.

Learn more about milliliters.

Teaspoon to Milliliter Conversion Table

Table showing various teaspoon measurements converted to milliliters.

Teaspoons	Milliliters
1 tsp	4.9289 mL
2 tsp	9.8578 mL
3 tsp	14.79 mL
4 tsp	19.72 mL
5 tsp	24.64 mL
6 tsp	29.57 mL
7 tsp	34.5 mL
8 tsp	39.43 mL
9 tsp	44.36 mL
10 tsp	49.29 mL
11 tsp	54.22 mL
12 tsp	59.15 mL
13 tsp	64.08 mL
14 tsp	69 mL
15 tsp	73.93 mL
16 tsp	78.86 mL
17 tsp	83.79 mL
18 tsp	88.72 mL
19 tsp	93.65 mL
20 tsp	98.58 mL
21 tsp	103.51 mL
22 tsp	108.44 mL
23 tsp	113.37 mL
24 tsp	118.29 mL
25 tsp	123.22 mL
26 tsp	128.15 mL
27 tsp	133.08 mL
28 tsp	138.01 mL
29 tsp	142.94 mL
30 tsp	147.87 mL
31 tsp	152.8 mL
32 tsp	157.73 mL
33 tsp	162.65 mL
34 tsp	167.58 mL
35 tsp	172.51 mL
36 tsp	177.44 mL
37 tsp	182.37 mL
38 tsp	187.3 mL
39 tsp	192.23 mL
40 tsp	197.16 mL

References

1. Florida Department of Agriculture and Consumer Services, Cooking Conversion Guide, https://www.fdacs.gov/content/download/17165/file/P-01775.pdf
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. National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf

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