30.9 tsp ≈ 0.64375 cup (Imperial; in US cups: 30.9 tsp = 0.773111 US cup). To convert teaspoons to cups, multiply by 0.020833344: 30.9 × 0.020833344 = 0.64375.
How to convert teaspoons to cups
cup = tsp × 0.020833344
- 1 tsp = 0.020833344 cup (and 1 cup = 47.999976 tsp).
- Multiply the amount by the factor: 30.9 × 0.020833344 = 0.64375.
- Answer: 30.9 tsp ≈ 0.64375 cup (rounded to 6 significant figures).
Teaspoons to Cups table
| Teaspoons (tsp) | Cups (cup) |
|---|---|
| 30.4 tsp | 0.633334 cup |
| 30.5 tsp | 0.635417 cup |
| 30.6 tsp | 0.6375 cup |
| 30.7 tsp | 0.639584 cup |
| 30.8 tsp | 0.641667 cup |
| 30.9 tsp | 0.64375 cup |
| 31 tsp | 0.645834 cup |
| 31.1 tsp | 0.647917 cup |
| 31.2 tsp | 0.65 cup |
| 31.3 tsp | 0.652084 cup |
| 31.4 tsp | 0.654167 cup |
| tsp | cup |
|---|---|
| 1 tsp | 0.0208333 cup |
| 5 tsp | 0.104167 cup |
| 10 tsp | 0.208333 cup |
| 50 tsp | 1.0417 cup |
| 100 tsp | 2.0833 cup |
| 1,000 tsp | 20.8333 cup |
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: 30.9 US tsp = 0.536034 cup.
The cup here is the Imperial (UK) cup: 1 cup = 0.28413 L. A US cup is 0.236588 L.
In US cups: 30.9 tsp = 0.773111 US cup.