How can a worksheet have maximum number of rows?

Answer 1

Worksheets have to have a limit on the amount of rows you have. A computer only has a limited amount of memory, so it cannot be infinite. The vast majority of spreadsheets will not come anywhere close to using them, so you have more than enough. While you can insert extra rows, the amount of rows stay the same and the bottom row is pushed off the spreadsheet. The same applies to the final column. As no data is likely to be there or anywhere near the last row or column, there is no problem in pushing them off. Up to Excel 2003 there were 65536 rows and 256 columns. From versions 2007 on there are 1048576 rows and 16384 columns as modern systems do tend to have more data than the earlier versions were capable of dealing with.

Answer 2

The amount of rows in a worksheet is fixed, so you cannot increase the amount of rows. What you can do is insert rows into part of a spreadsheet. It will have the effect of pushing rows down, but it will not increase the amount of rows in the worksheet. One of the reasons there are so many rows is that you will never use all of them, so it can push rows down to accommodate inserted rows and get rid of blank rows, but not increase the amount of rows that are in the worksheet. Excel 2007 has more rows than many of the earlier versions. It is has 1,048,576 rows whereas many of the earlier versions had 65,536 rows. Even that is more than enough to accommodate the spreadsheets that people normally create.