21 Converter

Extract text from 21 files


Drop or upload your .21 file
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How to extract text from your 21 file

  1. Click the "Select File" button above, and choose your 21 file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert 21 to another file type

To convert your 21 file to another format, you need Sage Pastel Payroll or other Data software.

Convert a file to 21

To convert other file formats to the "Tax Certificate Data" file type, you need software like Sage Pastel Payroll or a similar tool.


About 21 files

A .21 file is a context-dependent format often used as a dynamic extension for data files associated with the year 2021, such as IRP5 Tax Certificates exported by Sage Pastel Payroll. These plain text or proprietary data files contain employee earnings and tax deductions but fail to open in standard text editors due to the unrecognized numeric extension. Alternatively, a .21 file serves as the 21st volume in a multi-part split archive created by compression utilities like WinRAR or 7-Zip. In this scenario, the file is a binary segment useless on its own; it requires the preceding volumes (e.g., .001 through .020) to reconstruct the original dataset. A significant portion of these files are also standard PDF or XLSX documents simply misnamed with a version number (e.g., Report.21 instead of Report_v21.pdf), creating artificial compatibility friction. To restore accessibility, users should convert tax data to PDF for printing or CSV for analysis, join archive parts to extract the payload, or detect the true header to rename the extension correctly.

Convert.Guru analyzes your 21 file, detects the exact format, and lets you read the text inside.

Users also converted ICHAT, DRW, IMG, BIN, ASPX, RPMSG, 20, 10, 12 and 22 files.


FAQ

If you want to convert 21 file to ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, LZMA, CAB, ACE, ARJ or LHA, you can use Sage Pastel Payroll or similar software from the "Tax Data or Archive Volume" category. In the File menu, look for Save As… or Export….

To convert XXE, 7Z, Z, PAK, LHA, DEB, UUE, TAR, LZH, ZIP, PKG or RAR files to 21, try Sage Pastel Payroll or another comparable tool in the "Tax Data or Archive Volume" category.



The 21 Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our 21 converter.