If you're an Excel power user, you know that shortcut keys can save you a ton of time. Here are 35 essential shortcut keys for Microsoft Excel that will help you work faster and more efficiently.

1. Ctrl + A: Selects the entire worksheet.

2. Ctrl + B: Applies or removes bold formatting.

3. Ctrl + C: Copies the selected cells.

4. Ctrl + D: Fills the selected cells with the contents of the cell above.

5. Ctrl + F: Opens the Find and Replace dialog box.

6. Ctrl + G: Opens the Go To dialog box.

7. Ctrl + H: Opens the Find and Replace dialog box with the Replace tab selected.

8. Ctrl + I: Applies or removes italic formatting.

9. Ctrl + K: Inserts a hyperlink.

10. Ctrl + N: Creates a new workbook.

11. Ctrl + O: Opens an existing workbook.

12. Ctrl + P: Opens the Print dialog box.

13. Ctrl + R: Fills the selected cells with the contents of the cell to the left.

14. Ctrl + S: Saves the active workbook.

15. Ctrl + U: Applies or removes underlining.

16. Ctrl + V: Pastes the contents of the Clipboard into the selected cells.

17. Ctrl + W: Closes the active workbook.

18. Ctrl + X: Cuts the selected cells.

19. Ctrl + Y: Repeats the last command or action.

20. Ctrl + Z: Undoes the last command or action.

21. Ctrl + Shift + A: Inserts the sum of the selected cells.

22. Ctrl + Shift + B: Applies or removes bold formatting to the selected cells.

23. Ctrl + Shift + C: Copies the selected cells.

24. Ctrl + Shift + D: Fills the selected cells with the contents of the cell above.

25. Ctrl + Shift + F: Opens the Find and Replace dialog box.

26. Ctrl + Shift + G: Opens the Go To dialog box.

27. Ctrl + Shift + H: Opens the Find and Replace dialog box with the Replace tab selected.

28. Ctrl + Shift + I: Applies or removes italic formatting to the selected cells.

29. Ctrl + Shift + K: Inserts a hyperlink.

30. Ctrl + Shift + N: Creates a new workbook.

31. Ctrl + Shift + O: Opens an existing workbook.

32. Ctrl + Shift + P: Opens the Print dialog box.

33. Ctrl + Shift + R: Fills the selected cells with the contents of the cell to the left.

34. Ctrl + Shift + S: Saves the active workbook.

35. Ctrl + Shift + U: Applies or removes underlining from the selected cells.

These are just a few of the many shortcut keys that can save you time and help you work more efficiently in Excel. For a complete list of shortcut keys, consult the Help menu in Excel.