Convert PFX to PEM

Output Combined Data

openssl pkcs12 -nodes -in file.pfx -out file.pem

Key and certificate combined in single file

Output Key and Certificate

openssl pkcs12 -nodes -in file.pfx -nocerts -out star.contoso.org.key

Extract the Private Key

openssl pkcs12 -clcerts -in file.pfx -nokeys -out star.contoso.org.pem

Extract the Certificate