420 US customary teaspoons in UK tablespoons

Conversion

420 US customary teaspoons is equivalent to 138.009804625 UK tablespoons.^[1]

Conversion formula
How to convert 420 US customary teaspoons to UK tablespoons?

We know (by definition) that: $1 usteaspoon \approx 0.328594772916667 brtablespoon$

We can set up a proportion to solve for the number of UK tablespoons.

\frac{1 usteaspoon}{420 usteaspoon} \approx \frac{0.328594772916667 brtablespoon}{x brtablespoon}

Now, we cross multiply to solve for our unknown $x$ :

x brtablespoon \approx \frac{420 usteaspoon}{1 usteaspoon} * 0.328594772916667 brtablespoon \to x brtablespoon \approx 138.00980462500013 brtablespoon

Conclusion: $420 usteaspoon \approx 138.00980462500013 brtablespoon$

420 US customary teaspoons is equivalent to 138.009804625 UK tablespoons

Conversion in the opposite direction

The inverse of the conversion factor is that 1 UK tablespoon is equal to 0.00724586200753779 times 420 US customary teaspoons.

It can also be expressed as: 420 US customary teaspoons is equal to $\frac{1}{0.00724586200753779}$ UK tablespoons.

Approximation

An approximate numerical result would be: four hundred and twenty US customary teaspoons is about one hundred and thirty-eight point zero zero UK tablespoons, or alternatively, a UK tablespoon is about zero point zero one times four hundred and twenty US customary teaspoons.

Units involved

This is how the units in this conversion are defined:

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

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

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.

Conversion

Conversion formula How to convert 420 US customary teaspoons to UK tablespoons?

Conversion in the opposite direction

Approximation

Conversion formula
How to convert 420 US customary teaspoons to UK tablespoons?