Teaspoons (US) to Milliliters Converter
1 tsp equals 4.9289216 mL, and 1 mL equals 0.20288414 tsp. Enter a value in either box to convert teaspoons (us) to milliliters and back. Formula: cubic meters = value x unit factor (1 US gal = 231 in3 = 0.003785411784 m3 exactly; 1 UK gal = 4.54609 L).
· CalcFlow Editorial
1 tsp = 4.9289216 mL
Results shown are estimates for informational purposes only. Nothing on CalcFlow is financial, tax, legal, or medical advice. Always consult a qualified professional before making important decisions.
Teaspoons (US) to Milliliters Conversion Table
| Teaspoons (US) | Milliliters |
|---|---|
| 1 tsp | 4.9289216 mL |
| 2 tsp | 9.8578432 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 |
| 500 tsp | 2,464.4608 mL |
| 1,000 tsp | 4,928.9216 mL |
Milliliters to Teaspoons (US) Conversion Table
| Milliliters | Teaspoons (US) |
|---|---|
| 1 mL | 0.20288414 tsp |
| 2 mL | 0.40576827 tsp |
| 5 mL | 1.0144207 tsp |
| 10 mL | 2.0288414 tsp |
| 20 mL | 4.0576827 tsp |
| 50 mL | 10.144207 tsp |
| 100 mL | 20.288414 tsp |
| 500 mL | 101.44207 tsp |
| 1,000 mL | 202.88414 tsp |
Worked example: 10 tsp = 49.289216 mL. 3 US gallons is 3 x 3.785411784 = 11.356 liters. A 2 liter bottle holds 2 / 0.2365882365 = 8.45 US cups.
Need other units? Open the full Volume Converter.
Popular Volume Conversions
Formula
cubic meters = value x unit factor (1 US gal = 231 in3 = 0.003785411784 m3 exactly; 1 UK gal = 4.54609 L)Understanding Volume Conversion
Volume units come in two families that share names: US customary (gallon, quart, pint, cup, fluid ounce) and British imperial (the same names with different sizes). The US gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. The imperial gallon is exactly 4.54609 liters, about 20 percent larger. Cooking measures such as teaspoons and tablespoons are derived from the US gallon here.
Tips and Best Practices
- 1A US gallon is about 3.785 liters; an imperial gallon is about 4.546 liters. Check which one a recipe or fuel figure means.
- 2One US cup is about 236.6 mL, though nutrition labels round a cup to 240 mL.
- 3For liquids in cooking, 3 teaspoons make 1 tablespoon and 16 tablespoons make 1 US cup.
Real-World Example
3 US gallons is 3 x 3.785411784 = 11.356 liters. A 2 liter bottle holds 2 / 0.2365882365 = 8.45 US cups.
Common Mistakes to Avoid
- Using US gallons for a UK recipe or car fuel figure, which can be off by about 20 percent.
- Assuming a fluid ounce and an ounce of weight are the same; they measure different things.
- Mixing the US pint (473 mL) with the imperial pint (568 mL).
How to Use
- Type a number in the Teaspoons (US) box.
- The Milliliters result appears instantly; you can also edit the Milliliters box to convert backwards.
- Use the swap button to reverse the direction and Copy result to copy the answer.
Frequently Asked Questions
How many milliliters are in 1 tsp?
How many teaspoons (us) are in 1 mL?
What is the formula to convert teaspoons (us) to milliliters?
How many milliliters are in a cup?
Sources: NIST Handbook 44 Appendix B (US gallon = 231 cubic inches; tablespoon, teaspoon, cup, pint, quart); UK Weights and Measures Act (imperial gallon = 4.54609 L); 42-gallon petroleum barrel.