SSL Certificate Fingerprint Calculator

Compute SHA-1, SHA-256, and MD5 thumbprints for X.509 SSL/TLS certificates instantly to verify host identity and validate pin headers in your application.

How to Use SSL Certificate Fingerprint Calculator

  1. Paste Certificate Text: Provide your X.509 PEM certificate string.
  2. Calculate SHA-256 & SHA-1 Hashes: Computes cryptographic digests of the DER-encoded binary certificate payload.
  3. Copy Fingerprint Thumbprints: Use formatted fingerprint strings for certificate pinning in mobile apps and APIs.

Frequently Asked Questions

What is certificate pinning?

Certificate pinning is a security mechanism where client applications hardcode the expected certificate fingerprint, rejecting rogue certificates issued by compromised CAs.