Format in Excel 365 2016 2010 2007 2003

Check data entry for invalid entries

You can greatly reduce data-entry problems in your workbooks by making Excel check entries before entering them in specific cells. To do so, you need to define restrictions and data-validation rules for those cells.

Changing a spreadsheet tabs color

Color code is a perfect way to identify content and draw an attention to it. In Excel you can easily change colors of one or more spreadsheet tabs.

How to insert fractions

This tip describes how to use fractions simply.

Removing excess spaces and nonprinting characters

Often, data imported into an Excel worksheet contains excess spaces or strange (often unprintable) characters. There are two handy functions TRIM and CLEAN to cleanup such data.

How to enter a new line on a cell

If you have lengthy text in a cell, you can force Excel to display it in multiple lines within the cell.