SSH Key Converter | OpenSSH to PEM Online

Convert SSH keys between OpenSSH, PEM, PKCS#8 and RFC 4716 formats. Handles RSA, ECDSA and Ed25519 public or private keys, all in your browser. Free. Designed specifically for developers and professionals, this free online converter runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking and no registration required.

Also known as: ssh key converter · ssh key converter online · convert ssh key to pem · openssh to pem · convert openssh private key to pem · pem to openssh · rfc4716 to openssh · ssh public key to pem · convert public key to pem online

encoding and decoding tools

ssl and security tools

converters

Key Input

Converted Key Output

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About the SSH Key Converter

This tool converts SSH keys between the formats different software expects: OpenSSH public keys for authorized_keys and GitHub, PEM and PKCS#8 for OpenSSL, Java, AWS and Python libraries, and RFC 4716 for commercial SSH servers. It reads RSA, ECDSA (P-256, P-384, P-521) and Ed25519 keys, public or private, and does every conversion in your browser.

Key Features

OpenSSH public key to PEM (BEGIN PUBLIC KEY), the same output as ssh-keygen -e -m PKCS8
PEM or PKCS#8 back to an OpenSSH public key, like ssh-keygen -i
OpenSSH private key to PKCS#8 or traditional PEM (BEGIN RSA PRIVATE KEY / BEGIN EC PRIVATE KEY)
PEM private key to the OpenSSH format, for keys made with openssl genpkey
RFC 4716 (---- BEGIN SSH2 PUBLIC KEY ----) in both directions, comment header included
Shows key type, bit length and the SHA256 fingerprint ssh-keygen -l prints

Use Cases

Turn id_ed25519.pub into a PEM public key for a Java, Go or Node.js signature check
Convert an OpenSSH private key to PEM for a Paramiko script, a Jenkins credential or an SFTP client that rejects the newer format
Import an OpenSSL-generated key into ssh-agent by rewriting it as an OpenSSH private key
Paste an RFC 4716 key from a Tectia or Windows SSH server export into a Linux authorized_keys file
Confirm a key's fingerprint matches what GitHub or AWS shows before trusting it

Supported Formats

OpenSSH public (ssh-rsa, ecdsa-sha2-nistp256/384/521, ssh-ed25519)

OpenSSH private (openssh-key-v1, unencrypted)

PEM public (SPKI) and PKCS#1 RSA public

PKCS#8, PKCS#1 RSA and SEC1 EC private keys

RFC 4716 SSH2 public

Related Keywords

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openssh to pem

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rfc4716 to openssh

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convert public key to pem online

How do I convert an OpenSSH key to PEM without this tool?

For a public key, run ssh-keygen -e -m PKCS8 -f id_rsa.pub. For a private key, ssh-keygen -p -m PEM -f id_rsa rewrites the file in place, so copy it first. Note that macOS's ssh-keygen exports EC keys with explicit curve parameters and cannot export Ed25519 keys to PKCS#8 at all; this converter writes the standard named-curve form OpenSSL produces. Passphrase-protected keys are rejected rather than decrypted: remove the passphrase locally first.

Privacy & Security

All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.

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Frequently asked questions

What is SSH Key Converter used for?

Convert SSH keys between OpenSSH, PEM, PKCS#8 and RFC 4716 formats. Handles RSA, ECDSA and Ed25519 public or private keys, all in your browser. Free.

Is SSH Key Converter free to use?

Yes. SSH Key Converter is completely free with no usage limits, and there is no paid tier required to use it.

Do I need an account to use SSH Key Converter?

No. SSH Key Converter works immediately in your browser with no signup, login, or email address required.

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