How to convert teaspoons to milliliters
One teaspoon equals 4.928922 milliliters. To convert, multiply the number of teaspoons by 4.928922:
Mental-math shortcut: Use 5 mL per teaspoon for cooking and medicine — the exact US teaspoon is 4.93 mL.
Example
Convert 1 teaspoons to milliliters: 1 tsp × 4.928922 = 4.9289 mL.
Teaspoons to Milliliters conversion chart
| Teaspoons (tsp) | Milliliters (mL) |
|---|---|
| 1/8 | 0.616115 |
| 1/4 | 1.2322 |
| 1/2 | 2.4645 |
| 3/4 | 3.6967 |
| 1 | 4.9289 |
| 1.5 | 7.3934 |
| 2 | 9.8578 |
| 3 | 14.7868 |
| 4 | 19.7157 |
| 5 | 24.6446 |
| 6 | 29.5735 |
What is a teaspoon?
A US teaspoon (tsp) is 1/3 of a tablespoon, about 4.93 milliliters. Medicine and many metric recipes round it to exactly 5 mL. Recipes use teaspoons for small amounts such as salt, baking soda, spices and extracts.
What is a milliliter?
A milliliter (mL) is one thousandth of a liter — the same volume as one cubic centimeter (cc). Milliliters are used for drinks, medicine doses, cosmetics and recipes. A US teaspoon holds about 4.93 mL.
Converting the other way? Use the Milliliters to Teaspoons converter.
Frequently asked questions
How many milliliters is one teaspoon?
One teaspoon is 4.928922 milliliters.
How do I convert teaspoons to milliliters?
Multiply the value in teaspoons by 4.928922. For example, 1 tsp × 4.928922 = 4.9289 mL.
What is 2 tsp in milliliters?
2 tsp is 9.8578 milliliters.
How do I convert milliliters to teaspoons?
Multiply milliliters by 0.202884 (or divide by 4.928922). You can also use our Milliliters to Teaspoons converter.
Is a teaspoon 5 mL?
Almost. A US teaspoon is 4.93 mL, and the metric teaspoon used for medicine and most recipes outside the US is exactly 5 mL. The difference is too small to matter in cooking.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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