SSL Certificate Converter & Combiner | iN2 Tools

Convert certificates between PEM, DER, and PFX/P12 formats, or combine private keys, certificates, and CA chains.

SSL/TLS Certificate Format Converter & Bundler

Convert SSL certificates and private keys between PEM, DER, and PKCS#12 (PFX/P12) formats for Apache, NGINX, IIS, Tomcat, and F5 load balancers.

Common SSL Certificate Formats Explained

Certificates and private keys are encoded in different formats depending on web server platform requirements (Apache, NGINX, IIS, Java KeyStore).

Encoding & Extension Reference

  • PEM (Privacy Enhanced Mail): ASCII Base64 format bounded by -----BEGIN CERTIFICATE-----. Used natively by NGINX and Apache.
  • DER (Distinguished Encoding Rules): Binary format used by Java and Windows platforms (often `.crt` or `.der`).
  • PKCS#12 (PFX / P12): Password-protected binary archive containing the public cert, intermediate chain, and private key. Standard for Microsoft IIS.

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