Convert PEM to CRT/CER

Free online tool to convert PEM certificate files to CRT/CER format using our browser-based tool or OpenSSL/Bash (Linux/Unix) commands.

Convert Online (Browser-Based)

PEM Certificate File (.pem, .crt, .cer, .txt) *⚠️ Upload only leaf or intermediate certificates. Do not upload root CA certificates.

Include Certificate Chain (CA Bundle)

Output DER Format (Binary)

OpenSSL/Bash (Linux/Unix) Command:

openssl x509 -outform PEM -in certificate.pem -out certificate.crt

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