Tablespoon (US) to Teaspoon (UK) Converter

Volume Converter

40 units available

Decimals:

From

To

2.498023

1 tbsp = 2.498023 tsp (UK)

Formula:

tsp (UK) = tbsp × 2.4980225539

With your value: 1 tbsp = 2.49802255 tsp (UK)

How big is that?

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

Soda can (1/45 your value)0.0223 tbsp

Milk carton (1/15 your value)0.0676 tbsp

Kitchen bucket (1/1.5 your value)0.676 tbsp

Your value1.00 tbsp

Car fuel tank (3.4× your value)3.38 tbsp

Bathtub (14× your value)13.5 tbsp

Other Tablespoon (US) to Teaspoon (UK) conversions

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

Tablespoon (US) to Teaspoon (UK) Conversion Table

Tablespoon (US) (tbsp)	Teaspoon (UK) (tsp (UK))
0.5	1.249011
1	2.498023
2	4.996045
5	12.490113
10	24.980226
15	37.470338
20	49.960451
25	62.450564
50	124.901128
100	249.802255
250	624.505638
500	1,249.011277
1000	2,498.022554

Teaspoon (UK) to Tablespoon (US) Conversion Table

Teaspoon (UK) (tsp (UK))	Tablespoon (US) (tbsp)
0.5	0.200158
1	0.400317
2	0.800633
5	2.001583
10	4.003166
15	6.00475
20	8.006333
25	10.007916
50	20.015832
100	40.031664
250	100.07916
500	200.158321
1000	400.316642

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 (US) (tbsp)

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 (UK) (tsp (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

How to Convert Tablespoon (US) to Teaspoon (UK)

To convert from Tablespoon (US) (tbsp) to Teaspoon (UK) (tsp (UK)), multiply the value by 2.4980225539.

Formula: tsp (UK) = tbsp × 2.4980225539

Reverse: tbsp = tsp (UK) × 0.4003166418

Step-by-Step Example

Start with your value in Tablespoon (US). For example: 5 tbsp
Multiply by the conversion factor: 5 x 2.4980225539
The result is: 12.490113 tsp (UK)

About Tablespoon (US)

The US tablespoon equals approximately 14.79 mL or 3 teaspoons. It is a standard cooking measurement.

Common uses: cooking, baking, medicine.

About Teaspoon (UK)

The teaspoon (uk) (tsp (UK)) is a unit of volume and capacity. One teaspoon (uk) equals 0.005919388021 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.

Frequently Asked Questions

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

There are exactly 2.4980225539 Teaspoon (UK) in 1 Tablespoon (US). This means the conversion factor from Tablespoon (US) to Teaspoon (UK) is 2.4980225539.

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

The formula to convert Tablespoon (US) to Teaspoon (UK) is: tsp (UK) = tbsp × 2.4980225539. For example, to convert 10 Tablespoon (US) to Teaspoon (UK), you would multiply 10 by 2.4980225539.

What is a Tablespoon (US)?