SSL Converter
Convert SSL certificates and keys in your browser — PEM, DER, PKCS#7/P7B, PKCS#12/PFX. Runs fully local, no data leaves your device, free.
The conversion runs entirely in your browser. No certificates or keys are ever sent to our servers.
Note: RSA keys are fully supported, EC/Ed25519 only to a limited extent.
How it works
- Choose a file or paste PEM text
- Check the source format (usually auto-detected)
- Pick the target format; for PFX provide password/key
- Decrypt an encrypted key before converting it to PKCS#1/#8
- Click “Convert” and copy or download the result