Convert Teaspoon (US) (tsp (US)) to Teaspoon (UK) (tsp (UK)) instantly.
Teaspoon (US) to Teaspoon (UK) conversion
1 Teaspoon (US) (tsp (US)) = 0.83267418 Teaspoon (UK) (tsp (UK)). To convert Teaspoon (US) to Teaspoon (UK), multiply the value by 0.83267418.
| Teaspoon (US) (tsp (US)) | Teaspoon (UK) (tsp (UK)) |
|---|---|
| 1 | 0.83267418 |
| 2 | 1.6653484 |
| 5 | 4.1633709 |
| 10 | 8.3267418 |
| 25 | 20.816855 |
| 50 | 41.633709 |
| 100 | 83.267418 |
| 1000 | 832.67418 |
Frequently asked questions
How many Teaspoon (UK) are in one Teaspoon (US)?
One Teaspoon (US) (tsp (US)) equals 0.83267418 Teaspoon (UK) (tsp (UK)).
How do I convert Teaspoon (US) to Teaspoon (UK)?
To convert Teaspoon (US) to Teaspoon (UK), multiply the value by 0.83267418.
What is 10 Teaspoon (US) in Teaspoon (UK)?
10 Teaspoon (US) = 8.3267418 Teaspoon (UK).
About these units
Teaspoon (US) (tsp (US))
The US teaspoon equals 4.92892 mL, though rounded to 5 mL in most practical applications. Before standardization, teaspoon sizes varied widely across households and manufacturers. With the rise of packaged foods, pharmaceuticals, and industrial recipes, the US standardized teaspoon values brought consistency to cooking and medicine. Today, the teaspoon remains the most common household unit for measuring small amounts—especially spices, extracts, and medicines.
Teaspoon (UK) (tsp (UK))
The UK teaspoon is defined as 5 milliliters, a value adopted in modern culinary and medical standards. Historically, however, its size varied considerably, often ranging from 4 to 6 mL depending on household spoons, region, or era. The modern 5 mL standardization brought consistency to recipes, pharmaceutical dosing instructions, and food labeling. Because teaspoons were once everyday household items rather than calibrated instruments, the move toward fixed metric equivalents significantly improved recipe reliability and medical accuracy. Despite the shift to SI units, the teaspoon endures as a culturally intuitive volume measure used in cooking and oral medication dosing, tying contemporary practice to long-standing domestic traditions.