1 Teaspoon (UK) to Cup (US)
Quick answer
1 Teaspoon (UK) (tsp (UK)) equals
0.02502 cup
To convert 1 Teaspoon (UK)s to Cup (US)s, multiply by 0.0250197901. Therefore, 1 Teaspoon (UK) (tsp (UK)) equals 0.02502 Cup (US) (cup).
Formula: cup = tsp (UK) × 0.0250197901. Calculation: 1 × 0.0250197901 = 0.02502 cup.
Convert Teaspoon (UK) (tsp (UK)) to Cup (US) (cup) online with our free unit converter. In volume, 1 tsp (UK) = 0.02502 cup. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Teaspoon (UK) to Cup (US)
- Step 1 — start with the formula. cup = tsp (UK) × 0.0250197901
- Step 2 — substitute your figure. 1 tsp (UK) × 0.0250197901
- Step 3 — read the result. 1 tsp (UK) = 0.02502 cup
- Step 4 — check it in reverse. tsp (UK) = cup × 39.9683608622 returns 1 tsp (UK), which matches the figure you started with.
Volume Converter
40 units available
1 tsp (UK) = 0.02502 cup
Formula:
cup = tsp (UK) × 0.0250197901With your value: 1 tsp (UK) = 0.02501979 cup
How big is that?
Everyday references on a logarithmic scale, all expressed in teaspoon (uk) so you can sanity-check the result.
Other Teaspoon (UK) to Cup (US) conversions
Teaspoon (UK) to Cup (US) Conversion Table
| Teaspoon (UK) (tsp (UK)) | Cup (US) (cup) |
|---|---|
| 0.5 | 0.01251 |
| 1 | 0.02502 |
| 2 | 0.05004 |
| 5 | 0.125099 |
| 10 | 0.250198 |
| 15 | 0.375297 |
| 20 | 0.500396 |
| 25 | 0.625495 |
| 50 | 1.25099 |
| 100 | 2.501979 |
| 250 | 6.254948 |
| 500 | 12.509895 |
| 1000 | 25.01979 |
Cup (US) to Teaspoon (UK) Conversion Table
| Cup (US) (cup) | Teaspoon (UK) (tsp (UK)) |
|---|---|
| 0.5 | 19.98418 |
| 1 | 39.968361 |
| 2 | 79.936722 |
| 5 | 199.841804 |
| 10 | 399.683609 |
| 15 | 599.525413 |
| 20 | 799.367217 |
| 25 | 999.209022 |
| 50 | 1,998.418043 |
| 100 | 3,996.836086 |
| 250 | 9,992.090216 |
| 500 | 19,984.180431 |
| 1000 | 39,968.360862 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Teaspoon (UK) (tsp (UK))
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Cup (US) (cup)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Teaspoon (UK) to Cup (US)
To convert from Teaspoon (UK) (tsp (UK)) to Cup (US) (cup), multiply the value by 0.0250197901.
Formula: cup = tsp (UK) × 0.0250197901
Reverse: tsp (UK) = cup × 39.9683608622
Step-by-Step Example
- Start with your value in Teaspoon (UK). For example: 5 tsp (UK)
- Multiply by the conversion factor: 5 x 0.0250197901
- The result is: 0.125099 cup
Teaspoon (UK) and Cup (US) Relationship
Both Teaspoon (UK) and Cup (US) belong to the US Customary / Imperial system, making this an intra-system conversion within volume. Since 1 Teaspoon (UK) represents a fraction of a Cup (US) (1 Cup (US) ≈ 39.9684 Teaspoon (UK)s), the Cup (US) is the larger measurement interval. Understanding the relationship between Teaspoon (UK) and Cup (US) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Teaspoon (UK)
The Teaspoon (UK) (symbol: tsp (UK)) is a recognized unit in the US Customary / Imperial measurement framework, utilized within volume applications for precision and standardized data representation.
Common uses of Teaspoon (UK): volume calculations, engineering and science, education.
About Cup (US)
The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.
Common uses of Cup (US): baking, cooking, recipes.
Frequently Asked Questions
- What is 1 Teaspoon (UK) in Cup (US)?
- 1 Teaspoon (UK) equals 0.02502 Cup (US).
- How many Cup (US)s are in 1 Teaspoon (UK)?
- There are exactly 0.0250197901 Cup (US)s in 1 Teaspoon (UK). This means the conversion factor from Teaspoon (UK) to Cup (US) is 0.0250197901.
- What is the formula to convert Teaspoon (UK) to Cup (US)?
- The formula to convert Teaspoon (UK) to Cup (US) is: cup = tsp (UK) × 0.0250197901. For example, to convert 10 Teaspoon (UK)s to Cup (US)s, you would multiply 10 by 0.0250197901.
- What is a Teaspoon (UK)?
- The Teaspoon (UK) (symbol: tsp (UK)) is a recognized unit in the US Customary / Imperial measurement framework, utilized within volume applications for precision and standardized data representation.
- What is a Cup (US)?
- The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.
- What are the common uses of Teaspoon (UK)?
- The Teaspoon (UK) is commonly used in volume calculations, engineering and science, education.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). 1 Teaspoon (UK) to Cup (US). UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/1-teaspoon_uk-to-cup_us