# SSH Key Fingerprint Calculator

> Compute the SHA-256 and MD5 fingerprints of an OpenSSH public key and read its details.

An SSH key fingerprint is a hash of the public key blob, shown as SHA256 followed by base64. It is what your client displays when connecting to an unknown host, and what you compare to confirm a key is the one you expect. This tool computes it and reads the key type and strength.

**URL:** https://convertto.tech/t/ssh-key-fingerprint
**Category:** Hash & Crypto Tools (https://convertto.tech/c/crypto-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Enter or paste your openssh public key.
2. Press Run, then download the result when it is ready.

## FAQ

### Why does my fingerprint differ from an older one I recorded?

OpenSSH 6.8 changed the default from MD5 in hex to SHA-256 in base64. They describe the same key in different ways. Compare like with like — modern ssh-keygen -lf output is the SHA-256 form.

### Is it safe to paste a public key here?

Yes. A public key is designed to be shared — it goes in authorized_keys on every server you access. Never paste a private key anywhere, including here.

## Related tools

- [RSA & ECDSA Key Pair Generator](https://convertto.tech/t/keypair-generator): Generate an RSA or elliptic-curve key pair in your browser, exported as PEM or JWK.
- [Bcrypt Hash Generator](https://convertto.tech/t/bcrypt-hash-generator): Hash a password with bcrypt at a configurable cost factor — the right way to store passwords.
- [Passphrase Generator](https://convertto.tech/t/passphrase-generator): Generate memorable Diceware-style passphrases from random words.
- [Password Generator](https://convertto.tech/t/password-generator): Generate strong random passwords using your browser's cryptographic random source.
- [Password Policy Tester](https://convertto.tech/t/password-policy-tester): Test a password against a policy and see whether the policy actually improves security.
- [Password Strength Checker](https://convertto.tech/t/password-strength-checker): Estimate how long a password would take to crack, and see exactly what weakens it.
- [TOTP Code Generator](https://convertto.tech/t/totp-generator): Generate time-based one-time passwords from a Base32 secret to test 2FA setups.
- [Content Security Policy Generator](https://convertto.tech/t/csp-generator): Build a CSP header from common presets, with each directive explained.