Teaspoons to Milliliters Conversion
Enter the volume in teaspoons below to get the value converted to milliliters.
How to Convert Teaspoons to Milliliters

To convert a teaspoon measurement to a milliliter measurement, multiply the volume by the conversion ratio.
Since one teaspoon is equal to 4.928922 milliliters, you can use this simple formula to convert:
The volume in milliliters is equal to the teaspoons multiplied by 4.928922.
Teaspoons and milliliters are both units used to measure volume. Keep reading to learn more about each unit of measure.
Teaspoons
The teaspoon is a unit of volume equal to one-third of a tablespoon.[1] One teaspoon is equal to around 4.9 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.
Milliliters
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 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.
Milliliters are sometimes expressed using the abbreviation cc for medical dosage, which is the abbreviation for the cubic centimeter.
Teaspoon to Milliliter Conversion Table
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
- Florida Department of Agriculture and Consumer Services, Cooking Conversion Guide, https://www.fdacs.gov/content/download/17165/file/P-01775.pdf
- 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
- 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