The teaspoon
The US teaspoon equals 1/3 of a US tablespoon, or about 4.929 mL. The metric teaspoon (used on most non-US nutrition labels) is exactly 5 mL — close enough that you can substitute freely in cooking but not in precise dosing.
Teaspoons to Milliliters Converter
1 tsp = 4.92892 mL
1 teaspoon equals 4.92892 milliliters. To convert teaspoons to milliliters, multiply the teaspoon value by 4.92892. For quick reference: 1 tsp = 4.92892 mL, 5 tsp = 24.6446 mL, 10 tsp = 49.2892 mL, 100 tsp = 492.892 mL.
Formula
Milliliters = Teaspoons × 4.92892Quick
How to convert teaspoons to milliliters
Take your value
Start with your value in teaspoons.
Multiply by 4.92892
Multiply the teaspoon value by 4.92892. This is the exact conversion factor from teaspoons to milliliters.
Read the result
The product is your value in milliliters. For example, 5 tsp × 4.92892 = 24.6446 mL.
Conversion formula
The exact factor from teaspoons to milliliters is 4.92892.
Milliliters = Teaspoons × 4.92892
Teaspoons to Milliliters conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Teaspoons (tsp) | Milliliters (mL) |
|---|---|
| 0.1 tsp | 0.49289 mL |
| 0.25 tsp | 1.2322 mL |
| 0.5 tsp | 2.4645 mL |
| 1 tsp | 4.9289 mL |
| 1.5 tsp | 7.3934 mL |
| 2 tsp | 9.8578 mL |
| 2.5 tsp | 12.322 mL |
| 3 tsp | 14.787 mL |
| 4 tsp | 19.716 mL |
| 5 tsp | 24.645 mL |
| 6 tsp | 29.574 mL |
| 7 tsp | 34.502 mL |
| 8 tsp | 39.431 mL |
| 9 tsp | 44.36 mL |
| 10 tsp | 49.289 mL |
| 12 tsp | 59.147 mL |
| 15 tsp | 73.934 mL |
| 20 tsp | 98.578 mL |
| 25 tsp | 123.22 mL |
| 30 tsp | 147.87 mL |
| 40 tsp | 197.16 mL |
| 50 tsp | 246.45 mL |
| 60 tsp | 295.74 mL |
| 75 tsp | 369.67 mL |
| 100 tsp | 492.89 mL |
| 125 tsp | 616.12 mL |
| 150 tsp | 739.34 mL |
| 200 tsp | 985.78 mL |
| 250 tsp | 1232.2 mL |
| 300 tsp | 1478.7 mL |
| 400 tsp | 1971.6 mL |
| 500 tsp | 2464.5 mL |
| 600 tsp | 2957.4 mL |
| 750 tsp | 3696.7 mL |
| 1000 tsp | 4928.9 mL |
| 1500 tsp | 7393.4 mL |
| 2000 tsp | 9857.8 mL |
| 2500 tsp | 12322 mL |
| 3000 tsp | 14787 mL |
| 4000 tsp | 19716 mL |
| 5000 tsp | 24645 mL |
| 7500 tsp | 36967 mL |
| 10000 tsp | 49289 mL |
| 15000 tsp | 73934 mL |
| 20000 tsp | 98578 mL |
| 25000 tsp | 123223 mL |
| 30000 tsp | 147868 mL |
| 40000 tsp | 197157 mL |
| 50000 tsp | 246446 mL |
| 100000 tsp | 492892 mL |
Real-world reference
A standard pinch of salt is about 1/8 tsp. Most spice measurements in recipes are in teaspoons. In milliliters, that gives you: 1 tsp = 4.92892 mL, 10 tsp = 49.2892 mL, 100 tsp = 492.892 mL.
Frequently asked questions
- How many milliliters are in 1 teaspoon?
- 1 teaspoon equals 4.92892 milliliters.
- How do I convert teaspoons to milliliters?
- Multiply the teaspoon value by 4.92892. So x tsp × 4.92892 = the equivalent in mL.
- What is 5 teaspoons in milliliters?
- 5 teaspoons equals 24.6446 milliliters.
- What is 10 teaspoons in milliliters?
- 10 teaspoons equals 49.2892 milliliters.
- What is 100 teaspoons in milliliters?
- 100 teaspoons equals 492.892 milliliters.
- How do I convert back from milliliters to teaspoons?
- Multiply the milliliter value by 0.202884. For example, 1 mL = 0.202884 tsp.
- Is the teaspoon bigger than the milliliter?
- Yes. 1 teaspoon is larger than 1 milliliter — specifically 4.92892 times larger.
- Are these conversion factors exact?
- Yes. The factor of 4.92892 is derived directly from the SI definitions of teaspoon and milliliter.
About the teaspoon and the milliliter
The milliliter
The milliliter (mL) is a metric unit of volume equal to one-thousandth of a liter, or one cubic centimeter. It is the everyday unit for medication dosing, beverage sizes outside the US, and cooking in most of the world. Note that a US fluid ounce is 29.5735 mL, while a UK fluid ounce is 28.4131 mL.