A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The black triangles are Excel error indicators showing that numbers are stored as text. To remove them for the selected cells without converting the values, select the cells, select the warning box, and choose Ignore Error. If the triangles return, that usually means new or existing values are still being treated as text.
If the values should be real numbers, use Convert to Number instead:
- Select the affected cell or range.
- Select the error indicator or press Alt+Shift+F10.
- Choose Convert to Number.
If Convert to Number is not available or does not work, use a formula-based conversion:
- Insert a new column next to the text values.
- Enter
=VALUE(cell)using the first affected cell reference. - Fill the formula down.
- Copy the results.
- Use Home > Paste > Paste Special > Values to replace the original text values.
If the goal is only to hide the triangles, error checking for this condition can be turned off:
- Select File > Options.
- Select Formulas.
- Under Error checking rules, clear Numbers formatted as text or preceded by an apostrophe.
- Select OK.
If the entries are intended to stay as text, format the cells as Text before entering them. Excel notes that left-aligned numbers usually indicate they are not formatted as numbers.