Teaspoons to Milliliters Converter
Convert teaspoons (tsp) to milliliters (mL) for precise cooking and baking measurements.Updated 2026-03-16
Formula: mL = tsp × 4.92892 | tsp = mL ÷ 4.92892
Common Teaspoon to mL Conversions
| Teaspoons | Milliliters | Common Use |
|---|---|---|
| ¼ tsp | 1.23 mL | Pinch of spice |
| ½ tsp | 2.46 mL | Salt for one serving |
| 1 tsp | 4.93 mL | Vanilla extract |
| 1½ tsp | 7.39 mL | Baking powder |
| 2 tsp | 9.86 mL | Yeast packet (≈1 packet) |
| 3 tsp | 14.79 mL | = 1 tablespoon |
| 4 tsp | 19.72 mL | Cooking oil splash |
| 5 tsp | 24.64 mL | Medicine dose (adult) |
| 6 tsp | 29.57 mL | = 2 tablespoons |
| 8 tsp | 39.43 mL | Soy sauce for stir-fry |
| 10 tsp | 49.29 mL | Salad dressing |
| 12 tsp | 59.15 mL | = ¼ cup |
| 24 tsp | 118.29 mL | = ½ cup |
| 48 tsp | 236.59 mL | = 1 cup |
How to Convert Teaspoons to Milliliters
Multiply teaspoons by 4.92892 to get milliliters. The US teaspoon is defined as exactly 1/3 of a US tablespoon (≈4.929 mL). Note: the metric teaspoon is exactly 5 mL.
Example: 2 tsp × 4.92892 = 9.86 mL
💡 Quick tip: For approximate cooking conversions, 1 tsp ≈ 5 mL is close enough for most recipes.
Kitchen Measurement Quick Reference
Frequently Asked Questions
How many mL in a teaspoon?
One US teaspoon equals approximately 4.929 mL. For most cooking purposes, rounding to 5 mL is acceptable and is the standard metric teaspoon.
Is a metric teaspoon the same as a US teaspoon?
Not exactly. A US teaspoon is about 4.929 mL, while a metric teaspoon (used in Australia, UK, and many other countries) is exactly 5 mL. The difference is small (about 1.4%) and usually negligible in cooking.
How many teaspoons in a tablespoon?
There are 3 teaspoons in 1 tablespoon. So 1 tablespoon = 3 tsp = approximately 14.79 mL (or 15 mL metric).
"Teaspoons to mL Converter." ConvKit, conv-kit.com, https://conv-kit.com/tools/teaspoons-to-ml/. Accessed 2026-03-16.