Teaspoon (US) to Teaspoon (UK) Converter
Unit Converter
Instant · Precise · Universal
47 units available
6 categories total
How to Convert Teaspoon (US) to Teaspoon (UK)
To mL: multiply by 4.929. To UK teaspoons: multiply by 0.832674. To tablespoons (US): divide by 3.
1 US tsp = 1/3 US tbsp = 1/6 US fl oz = 1/48 US cup ≈ 4.929 mL.
For example, 1 Teaspoon (US) (tsp (US)) = 0.8326739056 Teaspoon (UK) (tsp (UK)).
Teaspoon (US) to Teaspoon (UK) — Common Values
| Teaspoon (US) (tsp (US)) | Teaspoon (UK) (tsp (UK)) |
|---|---|
| 0.1 | 0.08326739056 |
| 0.5 | 0.4163369528 |
| 1 | 0.8326739056 |
| 2 | 1.665347811 |
| 5 | 4.163369528 |
| 10 | 8.326739056 |
| 25 | 20.81684764 |
| 50 | 41.63369528 |
| 100 | 83.26739056 |
| 500 | 416.3369528 |
| 1000 | 832.6739056 |
About Teaspoon (US) (tsp (US))
Definition
The US teaspoon is a unit of culinary volume equal to 1/3 of a US tablespoon, or approximately 4.929 milliliters.
Mathematical Relationship
1 US tsp = 1/3 US tbsp = 1/6 US fl oz = 1/48 US cup ≈ 4.929 mL.
Conversion Formula
To mL: multiply by 4.929. To UK teaspoons: multiply by 0.832674. To tablespoons (US): divide by 3.
Practical Applications
Cooking and baking recipes, measuring medicine doses, adding spices, sugar or salt, and child medication dosing.
Interesting Facts
The US teaspoon is slightly smaller than the metric teaspoon (5 mL). The phrase 'a teaspoon of sugar' equals about 4 grams.
Common Mistakes
Using a regular eating spoon instead of a measuring teaspoon — actual teaspoons vary widely. Always use a calibrated spoon.
Educational Tips
3 tsp = 1 tbsp. 48 tsp = 1 cup. For mL conversion, remember 1 tsp ≈ 5 mL (the metric teaspoon is exactly 5 mL).
About Teaspoon (UK) (tsp (UK))
Definition
The UK teaspoon is a unit of culinary volume equal to approximately 5.919 milliliters, slightly larger than its US counterpart.
Mathematical Relationship
1 UK tsp ≈ 5.919 mL. Approximately 1.2 times the US teaspoon (4.929 mL).
Conversion Formula
To mL: multiply by 5.919. To US teaspoons: multiply by 1.201. To metric teaspoons: multiply by 1.184.
Practical Applications
Traditional British recipes, Commonwealth cooking, and older pharmaceutical dosing in the UK.
Interesting Facts
The UK teaspoon is about 20% larger than the US teaspoon. A recipe calling for 5 UK teaspoons would need 6 US teaspoons.
Common Mistakes
Assuming UK and US teaspoons are the same — the UK teaspoon is about 20% larger. This matters in precise baking.
Educational Tips
Modern UK recipes increasingly use metric (5 mL teaspoons). When following older UK recipes, a UK tsp ≈ 6 mL.