SSL certificate checker
Enter a hostname to check SSL/TLS certificate validity and expiry. Free tool — no account required.
Why check SSL certificates?
An expired certificate triggers browser warnings, erodes user trust, and can hurt SEO. Regularly verify your critical domains.
Monitor automatically. For expiry alerts, use our SSL monitoring (free plan up to 20 monitors).
Get alerts before expiry
UptimeFlux monitors your certificates 24/7 and warns you in time.
Create free account