While the process of resizing row height in Access is quite similar to that of resizing column width, the outcome is somewhat different. You cannot resize a single row in Access as you can a single column. When you resize the row height of any row, all rows in the table are affected.
To resize the rows in your Access table, place the mouse pointer on the record selector at the left of the datasheet between any two rows. When the pointer changes to a double-sided arrow, click and drag the row selected to the size you desire. When you let go of the mouse button, all of the rows will be resized.

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Another way to resize the rows it to select any row, right-click and choose Row Height. In the Row Height dialog box, enter the size to which you want to change the rows, or select the Standard Height check box. Click OK to apply the changes.