If you could do it, 2⁵⁰. but at that thickness, it would be about 26 million miles thick on the last fold. figuring 1.5 inches per ream of 20-pound paper.

But after 8 folds, which seems to be kind of the consensus as to the maximum number of times you could fold a piece of paper, if you’re starting with an 8.5×11 sheet or paper, you’re talking about a piece of paper that’s about 3/4 of an inch thick and about 0.03×0.04 inches in size.

If you started with a piece of paper 4’x8′, you’d have a 3/4″ thick stack of paper 1/6″x3/8″.That means the paper wouldn’t fold that many (8) times.

In fact, with a sheet of paper that size, the last fold in which there was enough paper to fold would be 6.

but hypothetically if one could, it is a math problem.

the layers would double everytime. (first fold 2, second fold 4, third fold 8…etc.)