US Teaspoons to Milliliters (tsp to mL) Converter
1 US teaspoon (tsp) = 4.92892 milliliters (mL). To convert US teaspoons to milliliters, multiply by 4.92892: 1 tsp × 4.92892 = 4.92892 mL. Also searched as US teaspoons to millilitres.
Quick facts
- 1 tsp = 4.92892 mL
- 1 mL = 0.202884 tsp
- Formula: mL = tsp × 4.92892
- Quick estimate: multiply by about 4.9
How to convert US teaspoons to milliliters
- Take the value in US teaspoons.
- Multiply it by 4.92892 (the number of milliliters in one US teaspoon).
- Round the result to the precision you need.
Worked example (a recipe): 1 tsp × 4.92892 = 4.92892 mL.
To convert milliliters back to US teaspoons, multiply by 0.202884, or divide by 4.92892.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
US Teaspoons to Milliliters conversion table
| US Teaspoons [tsp] | Milliliters [mL] |
|---|---|
| 0.01 tsp | 0.049289216 mL |
| 0.1 tsp | 0.49289216 mL |
| 1 tsp | 4.9289216 mL |
| 2 tsp | 9.8578432 mL |
| 3 tsp | 14.7867648 mL |
| 5 tsp | 24.644608 mL |
| 10 tsp | 49.289216 mL |
| 20 tsp | 98.578432 mL |
| 50 tsp | 246.44608 mL |
| 100 tsp | 492.89216 mL |
| 1000 tsp | 4928.9216 mL |
tsp to mL chart from 1 to 100
- 1 tsp 4.92892 mL
- 2 tsp 9.85784 mL
- 3 tsp 14.7868 mL
- 4 tsp 19.7157 mL
- 5 tsp 24.6446 mL
- 6 tsp 29.5735 mL
- 7 tsp 34.5025 mL
- 8 tsp 39.4314 mL
- 9 tsp 44.3603 mL
- 10 tsp 49.2892 mL
- 11 tsp 54.2181 mL
- 12 tsp 59.1471 mL
- 13 tsp 64.076 mL
- 14 tsp 69.0049 mL
- 15 tsp 73.9338 mL
- 16 tsp 78.8627 mL
- 17 tsp 83.7917 mL
- 18 tsp 88.7206 mL
- 19 tsp 93.6495 mL
- 20 tsp 98.5784 mL
- 25 tsp 123.223 mL
- 30 tsp 147.868 mL
- 35 tsp 172.512 mL
- 40 tsp 197.157 mL
- 45 tsp 221.801 mL
- 50 tsp 246.446 mL
- 55 tsp 271.091 mL
- 60 tsp 295.735 mL
- 65 tsp 320.38 mL
- 70 tsp 345.025 mL
- 75 tsp 369.669 mL
- 80 tsp 394.314 mL
- 85 tsp 418.958 mL
- 90 tsp 443.603 mL
- 95 tsp 468.248 mL
- 100 tsp 492.892 mL
Milliliters to US Teaspoons conversion table
| Milliliters [mL] | US Teaspoons [tsp] |
|---|---|
| 0.01 mL | 0.0020288414 tsp |
| 0.1 mL | 0.0202884136 tsp |
| 1 mL | 0.202884136 tsp |
| 2 mL | 0.4057682719 tsp |
| 3 mL | 0.6086524079 tsp |
| 5 mL | 1.0144206798 tsp |
| 10 mL | 2.0288413595 tsp |
| 20 mL | 4.0576827191 tsp |
| 50 mL | 10.1442067977 tsp |
| 100 mL | 20.2884135954 tsp |
| 1000 mL | 202.8841359538 tsp |
US Teaspoons vs Milliliters
| US Teaspoon | Milliliter | |
|---|---|---|
| Symbol | tsp | mL |
| Equals | 1 tsp = 4.92892 mL | 1 mL = 0.202884 tsp |
What is a US teaspoon?
A US customary cooking measure equal to 1/3 tablespoon. Used in US recipes for small quantities of ingredients.
What is a milliliter?
One thousandth of a liter. Used for small liquid quantities in cooking, medicine, and packaging.
Frequently asked questions
How many milliliters are in a US teaspoon?
There are 4.92892 milliliters in 1 US teaspoon (1 tsp = 4.9289216 mL).
How many US teaspoons are in a milliliter?
There are 0.202884 US teaspoons in 1 milliliter (1 mL = 0.202884136 tsp).
How do I convert US teaspoons to milliliters?
Multiply the number of US teaspoons by 4.92892. For example, 10 tsp × 4.92892 = 49.2892 mL. To convert back, multiply by 0.202884.
What is 10 tsp in milliliters?
10 tsp = 49.2892 mL.
What is 100 tsp in milliliters?
100 tsp = 492.892 mL.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.
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