Tablespoon (UK) to Teaspoon (US) Converter

Volume Converter

40 units available

Decimals:

From

To

3.60285

1 tbsp (UK) = 3.60285 tsp

Formula:

tsp = tbsp (UK) × 3.6028497765

With your value: 1 tbsp (UK) = 3.60284978 tsp

How big is that?

Everyday references on a logarithmic scale, all expressed in tablespoon (uk) so you can sanity-check the result.

Soda can (1/54 your value)0.0186 tbsp (UK)

Milk carton (1/18 your value)0.0563 tbsp (UK)

Kitchen bucket (1/1.8 your value)0.563 tbsp (UK)

Your value1.00 tbsp (UK)

Car fuel tank (2.8× your value)2.82 tbsp (UK)

Bathtub (11× your value)11.3 tbsp (UK)

Other Tablespoon (UK) to Teaspoon (US) conversions

2 tbsp (UK) to tsp 3 tbsp (UK) to tsp 4 tbsp (UK) to tsp 5 tbsp (UK) to tsp 6 tbsp (UK) to tsp 7 tbsp (UK) to tsp 8 tbsp (UK) to tsp

Tablespoon (UK) to Teaspoon (US) Conversion Table

Tablespoon (UK) (tbsp (UK))	Teaspoon (US) (tsp)
0.5	1.801425
1	3.60285
2	7.2057
5	18.014249
10	36.028498
15	54.042747
20	72.056996
25	90.071244
50	180.142489
100	360.284978
250	900.712444
500	1,801.424888
1000	3,602.849777

Teaspoon (US) to Tablespoon (UK) Conversion Table

Teaspoon (US) (tsp)	Tablespoon (UK) (tbsp (UK))
0.5	0.138779
1	0.277558
2	0.555116
5	1.38779
10	2.775581
15	4.163371
20	5.551161
25	6.938952
50	13.877903
100	27.755806
250	69.389515
500	138.779031
1000	277.558062

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.

Tablespoon (UK) (tbsp (UK))

Volume

Exact conversion

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

Teaspoon (US) (tsp)

Volume

Exact conversion

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 Tablespoon (UK) to Teaspoon (US)

To convert from Tablespoon (UK) (tbsp (UK)) to Teaspoon (US) (tsp), multiply the value by 3.6028497765.

Formula: tsp = tbsp (UK) × 3.6028497765

Reverse: tbsp (UK) = tsp × 0.2775580615

Step-by-Step Example

Start with your value in Tablespoon (UK). For example: 5 tbsp (UK)
Multiply by the conversion factor: 5 x 3.6028497765
The result is: 18.014249 tsp

About Tablespoon (UK)

The tablespoon (uk) (tbsp (UK)) is a unit of volume and capacity. One tablespoon (uk) equals 0.01775816406 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

About Teaspoon (US)

The US teaspoon equals approximately 4.93 mL. It is one of the most common cooking measurements.

Common uses: cooking, medicine dosage, baking.

Frequently Asked Questions

How many Teaspoon (US) are in 1 Tablespoon (UK)?

There are exactly 3.6028497765 Teaspoon (US) in 1 Tablespoon (UK). This means the conversion factor from Tablespoon (UK) to Teaspoon (US) is 3.6028497765.

What is the formula to convert Tablespoon (UK) to Teaspoon (US)?

The formula to convert Tablespoon (UK) to Teaspoon (US) is: tsp = tbsp (UK) × 3.6028497765. For example, to convert 10 Tablespoon (UK) to Teaspoon (US), you would multiply 10 by 3.6028497765.

What is a Tablespoon (UK)?