138 tsp ≈ 2.875 cup (Imperial; in US cups: 138 tsp = 3.4527 US cup). To convert teaspoons to cups, multiply by 0.020833344: 138 × 0.020833344 = 2.875.
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: 138 × 0.020833344 = 2.875.
- Answer: 138 tsp ≈ 2.875 cup (rounded to 6 significant figures).
Teaspoons to Cups table
| Teaspoons (tsp) | Cups (cup) |
|---|---|
| 133 tsp | 2.7708 cup |
| 134 tsp | 2.7917 cup |
| 135 tsp | 2.8125 cup |
| 136 tsp | 2.8333 cup |
| 137 tsp | 2.8542 cup |
| 138 tsp | 2.875 cup |
| 139 tsp | 2.8958 cup |
| 140 tsp | 2.9167 cup |
| 141 tsp | 2.9375 cup |
| 142 tsp | 2.9583 cup |
| 143 tsp | 2.9792 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: 138 US tsp = 2.3939 cup.
The cup here is the Imperial (UK) cup: 1 cup = 0.28413 L. A US cup is 0.236588 L.
In US cups: 138 tsp = 3.4527 US cup.