Do you mean the length of the text that is in the cell, or the number of
characters and spaces that could fit in the cell? The first you can get
using the LEN() worksheet function. If you mean the second: there is no
simple answer. The amount of text that can fit in a cell depends on several
things, including font used, font size, whether or not you use bold and/or
italics, and even the individual letters used since most fonts are
proportionately spaced (an i is a lot narrower than a W).