Microsoft Excel's Wrap Text command can help you wrap long sentence and let full content showing in one cells completely.

Firstly of all select the cells that you want to wrap text in them;

Then click the Wrap Text in Alignment group under Home tab. Following our example and it wraps the long sentence into two lines in the Cell A1. See the screen shot:

Please note that the Wrap Text command will wrap the long sentence automatically based on the cells' width.

Sometime you may want to wrap the long sentence manually at specific position. Now you need to add carriage return or hard return manually in cells.

Step 1: Double clicking the cell you will work with, and get to edit it.

Step 2: Put the cursor at the specific position that you want the long sentence wrapped.

Step 3: Press the Alt key and Enter key together.

Then it wraps the long sentence at the specific position you choose at Step 2. See the following screen shot:

Quickly split wrapped text of one cell into multiple cells/rows/columns in Excel

Kutools for Excel's Split Cells utility can help you quickly split one cell in which you wrap the content by hard return/carriage into multiple cells, multiple rows, or multiple columns with ease.

Add bullets and numbering into cells