0.666 tsp ≈ 3.9423 mL (Imperial; in US teaspoons: 0.666 US tsp = 3.2827 mL). To convert teaspoons to millilitres, multiply by 5.9193877: 0.666 × 5.9193877 = 3.9423.
How to convert teaspoons to millilitres
mL = tsp × 5.9193877
- 1 tsp = 5.9193877 mL (and 1 mL = 0.16893639 tsp).
- Multiply the amount by the factor: 0.666 × 5.9193877 = 3.9423.
- Answer: 0.666 tsp ≈ 3.9423 mL (rounded to 6 significant figures).
Teaspoons to Millilitres table
| Teaspoons (tsp) | Millilitres (mL) |
|---|---|
| 0.661 tsp | 3.9127 mL |
| 0.662 tsp | 3.9186 mL |
| 0.663 tsp | 3.9246 mL |
| 0.664 tsp | 3.9305 mL |
| 0.665 tsp | 3.9364 mL |
| 0.666 tsp | 3.9423 mL |
| 0.667 tsp | 3.9482 mL |
| 0.668 tsp | 3.9542 mL |
| 0.669 tsp | 3.9601 mL |
| 0.67 tsp | 3.966 mL |
| 0.671 tsp | 3.9719 mL |
| tsp | mL |
|---|---|
| 1 tsp | 5.9194 mL |
| 5 tsp | 29.5969 mL |
| 10 tsp | 59.1939 mL |
| 50 tsp | 295.969 mL |
| 100 tsp | 591.939 mL |
| 1,000 tsp | 5,919.39 mL |
Good to know
The tsp here is the Imperial (UK) teaspoon: 1 tsp = 0.00591939 L. A US teaspoon is 0.00492892 L.
In US teaspoons: 0.666 US tsp = 3.2827 mL.