1 UK tablespoon in US customary teaspoons

Conversion

1 UK tablespoon is equivalent to 3.04326204316587 US customary teaspoons.^[1]

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary teaspoon is equal to 0.328594772916667 times 1 UK tablespoon.

It can also be expressed as: 1 UK tablespoon is equal to $\frac{1}{0.328594772916667}$ US customary teaspoons.

Approximation

An approximate numerical result would be: one UK tablespoon is about three point zero four US customary teaspoons, or alternatively, a US customary teaspoon is about zero point three three times one UK tablespoon.

Units involved

This is how the units in this conversion are defined:

Uk Tablespoons

"A tablespoon is a large spoon used for serving or eating. In many English-speaking regions, the term now refers to a large spoon used for serving, however, in some regions, including parts of Canada, it is the largest type of spoon used for eating. By extension, the term is used as a measure of volume in cooking. The unit of measurement varies by region: a United Kingdom tablespoon is exactly 15 ml (0.51 US fl oz)."

Wikipedia page of UK tablespoons

Us Customary Teaspoons

"In the United States one teaspoon as a unit of culinary measure is 1⁄3 tablespoon, that is, 4.92892159375 ml; it is exactly 1 1⁄3 US fluid drams, 1⁄6 US fl oz, 1⁄48 US cup, and 1⁄768 US liquid gallon and 77⁄256 or 0.30078125 cubic inches. For nutritional labeling on food packages in the US, the teaspoon is defined as precisely 5 ml."

Wikipedia page of US customary teaspoons

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.