Convert DER to PEM Free — Online & Instant

Convert DER to PEM — Free Online

Fast, secure, no software needed.

📁 Drag & drop your file here

or click to browse • Max 100MB

✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install

How to Convert DER to PEM

Converting .der files to .pem is fast and simple with OpenAnyFile. DER is a security format: DER encoded certificate PEM is a security format: PEM is Base64-encoded certificate or key file.

Upload your .der file to OpenAnyFile
Select PEM (.pem) as the target format
Click "Convert" and wait for processing
Download your converted .pem file

Why Convert DER to PEM?

There are several reasons to convert from .der to .pem:

Compatibility: .pem may be more widely supported by software and devices
File size: Converting between formats can reduce file size for easier sharing
Editing: PEM may offer better editing capabilities for your workflow
Sharing: Recipients may prefer .pem files for their daily use

About DER Format

DER encoded certificate Category: Security. Extension: .der. Created by: ITU-T.

About PEM Format

PEM is Base64-encoded certificate or key file. Category: Security. Extension: .pem. Created by: Various.

Frequently Asked Questions

How do I convert .der to .pem?

Upload your .der file to OpenAnyFile, select PEM as the target, and download the converted file.

Is DER to PEM conversion free?

OpenAnyFile offers free file analysis. Conversion may require a one-time payment depending on the file.

Will I lose quality converting .der to .pem?

OpenAnyFile preserves maximum quality during conversion. Some format-specific features may not transfer between different file types.

Can I convert .pem back to .der?

Yes, you can convert .pem to .der using OpenAnyFile as well.

🔓 Unlock Full File Access

Unlimited conversions, batch processing & priority support.

Upgrade to Pro — $12/mo

Cancel anytime.