How to compare Excel sheets side by side?
If there are two or more sheets across workbooks needed to compare with each other, it may be annoying for you to switch them one by one for comparing. Here I introduce the tricks on comparing sheets side by side horizontally or vertically as below screenshot shown.
Compare multiple sheets side by side with Arrange All function
Compare two lists in difference sheets and find duplicates with Kutools for Excel 
Compare multiple sheets side by side with Arrange All function
In Excel, you can compare multiple sheets across different workbooks with the Arrange All function.
1. Open all workbooks you want to compare, and activate one of them, and click View > Arrange All. See screenshot:
2. Then the Arrange Windows dialog pops out, you can check one option in the Arrange section as you need.
2. Click OK, and the workbooks windows will be arranged side by side.
Tiled: arrange and resize all opened workbooks so that all of them can be fitted side by side on the screen. See screenshot:
Horizontal: resize the workbooks windows equally and arrange them one above one horizontally. See screenshot:
Vertical: resize workbooks in same size and arrange them left to right. See screenshot:
Cascade: arrange and size workbooks overlap one and another with each title bar shown only. See screenshot:
Compare two lists in difference sheets and find duplicates with Kutools for Excel
If you just want to compare two data lists in different sheets in the one workbook for finding the different or same values, you can apply Kutools for Excel’s Select Same & Different Cells utility to quickly compare two lists by cells or rows as below screenshot shown.
| Kutools for Excel, with more than 300 handy functions, makes your jobs more easier. |
After free installing Kutools for Excel, please do as below:
1. Select the first one list you want to compare to, and click Kutools > Select > Select Same & Different Cells. See screenshot:
2. Then in the Select Same & Different Cells dialog, click 
in According to: (Range B) to select the second list you want to compare with the first list. See screenshot:
3. Then you can check My data has headers option to exclude headers when comparing if there are same headers in the two lists, and select one option in the Based on and Find section as you need, if you want to highlight the selected same values or different values, you can check Fill background or Fill font color option in Processing of result section. See screenshot:
4. Click Ok, and a dialog pops out to remind you the number of same values or different values in the two lists. See screenshot:
5. Click OK to close the popping remind dialog.
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