Teaspoons to Millilitres Converter
Convert teaspoon to millilitre instantly. Type a value below — the result updates as you type.
When you need to convert teaspoon to millilitre
Volume conversions show up most in the kitchen and at the pump — scaling a recipe written for another country, dosing a liquid, or comparing fuel and drink sizes between metric and US/UK measures.
Typical values: 0.5 tsp is about 2.4645 ml, and 100 tsp works out to roughly 492.8922 ml. Because the ratio is fixed at 4.9289, you can scale any amount linearly — doubling the teaspoons doubles the millilitres.
US and UK 'cups', 'pints' and 'gallons' differ, so always check which system a recipe or label uses before converting.
How to convert teaspoon to millilitre
One teaspoon equals 4.9289 millilitres. To convert, multiply the number of teaspoons by 4.9289:
millilitres = teaspoons × 4.9289
For example, 10 teaspoons × 4.9289 = 49.2892 millilitres.
Teaspoons to millilitres conversion table
| Volume (tsp) | Millilitres (ml) |
|---|---|
| 1 tsp | 4.9289 ml |
| 2 tsp | 9.8578 ml |
| 3 tsp | 14.7868 ml |
| 5 tsp | 24.6446 ml |
| 10 tsp | 49.2892 ml |
| 20 tsp | 98.5784 ml |
| 50 tsp | 246.4461 ml |
| 100 tsp | 492.8922 ml |
FAQ
How many millilitres are in a teaspoon?
One teaspoon = 4.9289 millilitres.
How do I convert millilitres back to teaspoons?
Divide by 4.9289, or use the millilitres to teaspoons converter.