.B64 File Extension

File Type:
Base64 MIME-Encoded File

Having trouble opening .b64 extension? Don't panic! This page explains what b64 files are as well as suggests programs you may use to open b64 files. You can download these programs through this page.

What is a B64 file?

B64 file extension has Base64 MIME-Encoded file type, which is associated with the "compressed files" category.

A file encoded with the base 64 encoding method. Usually used for converting text information into base64 data. Allows more reliable transferring of information and e-mail attachments. Has a structure which is similar to .MIME attachments. 


To learn how you can open the given file, read the information below.

b64 file icon
File Type:
Base64 MIME-Encoded File
Compressed Files

How to open B64 file?

Double click the b64 file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .b64 extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the b64 extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the b64 file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open B64 files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the b64 file as well. Download Universal File Viewer for your OS.

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