How to convert 366 days to months?
We know (by definition) that:
We can set up a proportion to solve for the number of months.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 month is equal to 0.0831607920721767 times 366 days.
It can also be expressed as: 366 days is equal to months.
An approximate numerical result would be: three hundred and sixty-six days is about twelve point zero one months, or alternatively, a month is about zero point zero eight times three hundred and sixty-six days.
 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.