PEM to DER Converter

Convert PEM (.pem) to DER (.der) via a free public conversion API from the browser. UniConvert is come-convert-leave: no account and no permanent file library.

Open the interactive PEM to DER Converter (loads automatically when JavaScript is available).

How to convert PEM to DER

Step 1. Choose a .pem file from your device.
Step 2. Confirm the output format is .der — this page is already set to PEM → DER.
Step 3. Start the conversion, then preview, copy, or download the .der result. Nothing is kept for later.

Why convert PEM to DER here

PEM → DER uses a free public API called directly from the page — no UniConvert servers in the middle.
Category: Certificates & Keys — Certificate and key utilities for PEM, DER, and related encodings.
No signup, no subscription, and no permanent storage of your files on UniConvert.
Status: available now.

PEM to DER FAQ

Is this PEM to DER converter free?

Yes. UniConvert does not require an account for PEM → DER. Ads may appear to keep the site free.

Do you store my PEM files?

Files for this pair are sent to the free conversion provider for processing and are not stored by UniConvert afterward.

What is the difference between .pem and .der?

.pem is treated as the input format and .der as the output. Use this page when you specifically need PEM → DER rather than a generic upload form.

Can I convert other formats in Certificates?

Yes — open the Certificates & Keys category for other pairs, or use Convert a file to pick any available source and target.