How to convert 686 UK tablespoons to US tablespoons?
We know (by definition) that:
We can set up a proportion to solve for the number of US tablespoons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US tablespoon is equal to 0.00143700338010204 times 686 UK tablespoons.
It can also be expressed as: 686 UK tablespoons is equal to US tablespoons.
An approximate numerical result would be: six hundred and eighty-six UK tablespoons is about six hundred and ninety-five point eight eight US tablespoons, or alternatively, a US tablespoon is about zero times six hundred and eighty-six UK tablespoons.
 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.