How to create .pfx file from certificate and private key?

1. Open web page - 

2. Select Type of Current Certificate

Your certificate should be issued in Standard PEM format. Common PEM extensions include .cer, .crt, and .pem. Make sure Type of Current Certificate is set to “Standard PEM”.

3. Select Type to Convert To

Select “PFX/PKCS#12” as the Type to Convert To.

4. Upload Certificate

Locate Certificate File to Convert and click the Choose File button to upload your certificate. This file should be the certificate that is issued to your web server domain.

5. Upload Private Key

Locate Private Key File and click the Choose File button to upload the file. 

6. Upload Chain Certificate Files

Locate Chain Certificate File and click Choose File to upload the CA intermediate certificate. The appropriate certificate depends on what brand of SSL you have, so please make sure you have the correct intermediate certificate before you upload your file.

8. PFX Password

Create a new password for your PFX file. You will need to remember this password when you install the PFX file on your system.

9. Convert Certificate

Once you have uploaded the certificate and key files, click the Convert Certificate button to complete the process and download your new PFX file.