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Knowledge Base > TR-069 > How do I convert a certificate from .cer/.crt/.der format to .pem format?

How do I convert a certificate from .cer/.crt/.der format to .pem format?

The following openssl command can be used to convert a certificate in .cer/.crt/.der format to .pem format: 

# openssl x509 -inform DER -in MYCERT.cer -out MYCERT.pem

For more information, please see the OpenSSL x509 documentation available here.