Convert Teaspoon (tsp) to US Cup (cup) instantly. Enter any value — result updates live.
Converting Teaspoon to US Cup is a common volume conversion. One teaspoon (tsp) equals 0.0208333474 us cup (cup). Teaspoons are the smallest common cooking measurement, also used for medicine dosing.
This conversion is commonly needed for fuel and vehicle maintenance, aquarium and pool sizing, shipping liquid products. Cups are the most common volume measurement in American home cooking and baking.
To put teaspoon in perspective: a teaspoon of salt. In us cup, common references include a cup of rice (uncooked, about 185 g).
The teaspoon's modern volume (about 4.93 mL in the US) was standardized in the early 20th century specifically to make recipe scaling and medicine dosing more consistent.
The US cup (240 mL) isn't a formally defined SI or imperial unit — it varies slightly from Commonwealth and Japanese 'cup' measurements, a common source of recipe conversion errors.
People frequently convert between teaspoon and us cup for:
| Teaspoon (tsp) | US Cup (cup) |
|---|---|
| 1 tsp | 0.0208333474 cup |
| 2 tsp | 0.0416666948 cup |
| 5 tsp | 0.104166737 cup |
| 10 tsp | 0.208333474 cup |
| 15 tsp | 0.312500211 cup |
| 20 tsp | 0.416666948 cup |
| 25 tsp | 0.520833686 cup |
| 30 tsp | 0.625000423 cup |
| 50 tsp | 1.04167 cup |
| 100 tsp | 2.08333 cup |
| 200 tsp | 4.16667 cup |
| 500 tsp | 10.4167 cup |
| 1000 tsp | 20.8333 cup |