Remove ASCII Character #127 in Excel

Image of two people working with an Excel spreadsheet

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Each character on a computer (printable and non-printable) has a number known as its Unicode character code or value.

Another older, and better-known character set is ASCII, which stands for the American Standard Code for Information Interchange. ASCII has been incorporated into the Unicode set. As a result, the first 128 characters (0 to 127) of the Unicode set is identical to the ASCII set.

Many of the first 128 Unicode characters are referred to as control characters. They are used by computer programs to control peripheral devices such as printers.

These characters are not intended for use in Excel worksheets and can cause a variety of errors if present. Excel's CLEAN function will remove most of these non-printable characters with the exception of character #127.

The information in this article applies to Excel versions 2019, 2016, 2013, Excel for Mac, and Excel Online.

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What Is Unicode Character #127?

Remove ASCII Character #127 from Data in Excel

Unicode character #127 controls the delete key on the keyboard.

If present, it is displayed as a narrow box-shaped character, as shown in cell A2 in the image above. It is sometimes accidentally imported or copied along with some good data.

Its presence may cause several issues, such as:

  • Simple formatting problems in a worksheet.
  • Data sorting and filtering issues.
  • Calculation problems if present in a cell along with data that is being used in a formula.
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Removing Unicode Character #127

Even though this character cannot be removed with the CLEAN function, it can be removed using a formula containing the SUBSTITUTE and CHAR functions.

The example in the image above shows four rectangle-shaped characters along with the number 10 in cell A2 of an Excel worksheet.

The LEN function counts the number of characters in a cell. In cell E2, LEN shows that cell A2 contains six characters (the two digits for the number 10 plus the four boxes for character #127).

Due to the presence of character #127 in cell A2, the addition formula in cell D2 returns a #VALUE! error message.

Cell A3 contains this SUBSTITUTE/CHAR formula. 


The formula replaces the four #127 characters from cell A2 with nothing (shown by the empty quotation marks at the end of the formula).

As a result:

  • The character count in cell E3 is reduced to two for the two digits in the number 10.
  • The addition formula in cell D3 returns the correct answer of 15 when adding the contents for cell A3 + B3 (10 + 5).
  • The SUBSTITUTE function does the actual replacing while the CHAR function is used to tell the formula what character to replace.
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Removing Non-Breaking Spaces From a Worksheet

Similar to non-printable characters, the non-breaking space (&nbsp) can also cause problems with calculations and formatting in a worksheet. The Unicode code number for non-breaking spaces is #160.

Non-breaking spaces are used extensively in web pages. If data is copied into Excel from a web page, non-breaking spaces may show up in a worksheet.

Removing non-breaking spaces can be done with a formula that combines the SUBSTITUTE, CHAR, and TRIM functions.