.PFX File

The pfx file extension is related to PKCS #12 certificates. These encrypted security files requires a password to be opened.

It stores secure certificates used to authenticate a person or device, such as a computer or Web server.

MIME types:
application/x-pkcs12

Files with pfx file extension can be usually encountered as PKCS #12 certificates for web browsers.

How to open:

Install the file by right-clicking the file and selecting "Install PFX."

How to convert:

Certificate files usually are not meant to be converted to anything else.