SSL Converter

Convert Your SSL Certificate to the Correct Format

Sometimes the Certificate Authority that issued your SSL certificate send it in a file-type that isn't compatible with your server. Fortunately, this can be easily fixed. Whether you're dealing with DER, PKCS#7, P7B, PKCS#12 or PFX format, it's easy to convert, we have the tools. We can fix this.

Convert your SSL Certificate to the Correct File Type

Different servers require different formats of SSL certificates. Our SSL converter tool converts between 6 different file formats quickly and easily. Choose the file format which is required: PEM, DER, PKCS#7, P7B, PKCS#12 or PFX.

DER format

Is a binary form of PEM. It has extension .der or .cer.

DER is typically used with Java platforms. Our Converter can change the type of certificate to this format - to change a private key, please use OpenSSL commands.

PKCS#7 or P7B format

Is usually stored in Base64 format and has extension .p7b or .p7c. Files in this format contain lines "-----BEGIN PKCS7-----" and "-----END PKCS7-----". This format is just for certificates, not for private keys.

PKCS#7 and P7B are installed on Microsoft Windows and Java Tomcat servers.

PKCS#12 or PFX format

Is a binary format storing the server certificate, intermediates certificates, and private key in one file. It usually has the extension .pfx or .p12. Typically, these are used on Windows machines.

When converting PFX format to PEM, one file will include all certificates and the private key.

To separate it, you need to open this file in a simple text editor, copy every single part (with BEGIN and END lines) to different files and save it as certificate.cer, CACert.cer and privatekey.key.

Click here to convert formats with OpenSSL commands.

If your certificate was issued in the format not compatible with the server, convert it below:

  • Find current type,
  • Check the new format,
  • Select your certificate file,
  • Click convert button.

Friendly Tip: One of the most common support issues we handle is SSL certificates being sent in the wrong format. This isn't like a macOS vs. Windows issue. The files can be converted.

With decades of SSL support experience between them all, our team of SSL experts is always available to assist you.