Click the "Select File" button above, and choose your 3 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert 3 to another file type
To convert 3 Tender files to another format, you need WinRAR or other Compressed software.
Convert a file to 3
To convert other file formats to the "Split Archive Segment" file type, you need software like WinRAR or a similar tool.
About 3 files
A .3 file is highly ambiguous. It most commonly represents a sequential backup file, a multi-volume archive segment, or a Unix Section 3 Manual Page. Backup software like Norton 360 and archivers like WinRAR use numbered extensions (like 1, .2, .3) to split large archives into smaller, manageable chunks. On Linux and macOS systems, a .3 file often stores documentation for C library functions formatted by the troff/groff system. Occasionally, software like WhatsApp or PTC Creo uses the .3 extension as a temporary container for encrypted media, JPEG images, or CAD models.
The primary disadvantage of a .3 file is that modern operating systems like Windows do not know what to do with it. Because the extension is generic, double-clicking it usually results in an error. If the file is part of a split archive, it is completely useless without the preceding 1 and .2 files. If it is a Unix manual page, it lacks standard formatting when opened in basic text editors.
To make this file usable, you must identify its true content and convert it. For Unix manual pages, convert to PDF or TXT for easy reading on any device. If it is a hidden image, extract it to JPG or PNG. We will identify the true signature of your .3 file and give you the correct target formats.
Convert.Guru analyzes your 3 file, detects the exact format, and lets you read the text inside.
If you want to convert 3 file to SYS, DLL, EXE, DRV, VXD, 386, COM, BAT, CMD, SCR, PIF or LNK, you can use WinRAR or similar software from the "Sequential Backup or Archive" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to 3, try WinRAR or another comparable tool in the "Sequential Backup or Archive" category.
The 3 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 3 converter.