Tablespoon (UK) to Teaspoon (US) Converter
Unit Converter
Instant · Precise · Universal
47 units available
6 categories total
How to Convert Tablespoon (UK) to Teaspoon (US)
To mL: multiply by 17.758. To US tablespoons: multiply by 1.201. To metric tablespoons: multiply by 1.184.
1 UK tbsp ≈ 17.758 mL = 3 UK tsp. About 20% larger than a US tablespoon (14.787 mL).
For example, 1 Tablespoon (UK) (tbsp (UK)) = 3.60285707 Teaspoon (US) (tsp (US)).
Tablespoon (UK) to Teaspoon (US) — Common Values
| Tablespoon (UK) (tbsp (UK)) | Teaspoon (US) (tsp (US)) |
|---|---|
| 0.1 | 0.360285707 |
| 0.5 | 1.801428535 |
| 1 | 3.60285707 |
| 2 | 7.205714141 |
| 5 | 18.01428535 |
| 10 | 36.0285707 |
| 25 | 90.07142676 |
| 50 | 180.1428535 |
| 100 | 360.285707 |
| 500 | 1801.428535 |
| 1000 | 3602.85707 |
About Tablespoon (UK) (tbsp (UK))
Definition
The UK tablespoon is a unit of culinary volume equal to approximately 17.758 milliliters, or 3 UK teaspoons.
Mathematical Relationship
1 UK tbsp ≈ 17.758 mL = 3 UK tsp. About 20% larger than a US tablespoon (14.787 mL).
Conversion Formula
To mL: multiply by 17.758. To US tablespoons: multiply by 1.201. To metric tablespoons: multiply by 1.184.
Practical Applications
Traditional British baking and cooking, Commonwealth recipes, and older pharmaceutical references.
Interesting Facts
Australia officially uses a 20 mL tablespoon, the UK uses ~17.8 mL, and the US uses ~14.8 mL — three different sizes for the same name!
Common Mistakes
Mixing up UK and US tablespoons in international recipes. A UK tbsp is ~20% larger than a US tbsp.
Educational Tips
Modern UK cooking is shifting to metric (15 mL). When following old UK recipes, add ~20% more than a US tbsp would indicate.
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).