To insert a check mark in your Excel 2013 document use the Wingdings font located on the Insert tab in the Symbols group. The font dialog box provides a choice of several check mark characters to insert in your document.
Place your cursor in the cell intended for the check mark. Click the Insert tab and locate Symbols, found on the right side of the ribbon.
Click Symbol to open the dialog box. From the Font drop-down menu, select the Wingdings font.
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Select the check mark -- it's located near the bottom of the symbols dialog box -- click Insert and Close. Pick from any of the several different types of check mark symbols available. To insert more than one check mark, continue to click insert the click Close when you're finished with your insertions.