21 UK tablespoons in US customary teaspoons
Result
The conversion result is: 21 UK tablespoons is equivalent to 63.9085029064833 US customary teaspoons.[1]
Conversion formula
How to convert 21 UK tablespoons to US customary teaspoons?
We know (by definition) that: 1 brtablespoon ≈ 3.04326204316587 usteaspoon.
We can set up a proportion to solve for the number of US customary teaspoons.
1 brtablespoon / 21 brtablespoon ≈ 3.04326204316587 usteaspoon / x usteaspoon
Now, we cross multiply to solve for our unknown x:
x usteaspoon ≈ (21 brtablespoon / 1 brtablespoon) * 3.04326204316587 usteaspoon → x usteaspoon ≈ 63.90850290648327 usteaspoon
Conclusion:
21 brtablespoon ≈ 63.90850290648327 usteaspoon
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary teaspoon is equal to 0.0156473701388889 times 21 UK tablespoons.
It can also be expressed as: 21 UK tablespoons is equal to 1 / 0.0156473701388889 US customary teaspoons.
Approximation
An approximate numerical result would be: twenty-one UK tablespoons is about sixty-three point nine zero US customary teaspoons, or alternatively, a US customary teaspoon is about zero point zero two times twenty-one 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.