Convert Teaspoon (US) to US cups
Americas · Cooking Measures · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
Quick answer
1 Teaspoon (US) = 0.0208333 US cups
1 Teaspoon (US) = 0.0208333 US cups. Teaspoon (US) is a traditional volume unit from Americas.
Convert any amount
Teaspoon (US) to US cups table
| Teaspoon (US) | US cups |
|---|---|
| 0.25 Teaspoon (US) | 0.00520833 US cups |
| 0.5 Teaspoon (US) | 0.0104167 US cups |
| 1 Teaspoon (US) | 0.0208333 US cups |
| 2 Teaspoon (US) | 0.0416667 US cups |
| 3 Teaspoon (US) | 0.0625 US cups |
| 4 Teaspoon (US) | 0.0833333 US cups |
| 5 Teaspoon (US) | 0.104167 US cups |
| 10 Teaspoon (US) | 0.208333 US cups |
| 20 Teaspoon (US) | 0.416667 US cups |
| 25 Teaspoon (US) | 0.520833 US cups |
| 50 Teaspoon (US) | 1.04167 US cups |
| 100 Teaspoon (US) | 2.08333 US cups |
About the Teaspoon (US)
US teaspoon = 4.93ml.
- Symbol
- tsp
- Value in SI
- 1 Teaspoon (US) = 0.00492892 litre
- Typical use
- cooking
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.
Frequently asked
How many US cups are in a Teaspoon (US)?
1 Teaspoon (US) = 0.0208333 US cups. Multiply the number of Teaspoon (US) by 0.020833327 to get US cups.
What is Teaspoon (US) used for?
US teaspoon = 4.93ml. It is classified as active and dates from the modern period.
Is the Teaspoon (US) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Teaspoon (US) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Teaspoon (US) to US cups. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/tsp-us-to-us-cup
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