====== Certificates - Conversions - Convert .der to .pem ======

<code bash>
openssl x509 -inform der -in to-convert.der -out converted.pem
</code>

or to convert a DER file (.crt .cer .der) to PEM

<code bash>
openssl x509 -inform der -in cert.cer -out cert.pem
</code>