SSL certificate checker
Enter a domain. We show when its SSL certificate expires.
Why SSL expiry matters
When a certificate expires, browsers show a security warning to visitors.
We check your certificates every 12 hours and alert you 14 days and 3 days before expiry.
Check an SSL certificate expiration date online
Enter a domain to see the SSL expiry date and the days remaining. Bahasa Indonesia: cek SSL expired.
How to check SSL expiry with OpenSSL (command line)
- Open a terminal on a computer with OpenSSL.
- Run: echo | openssl s_client -servername example.com -connect example.com:443 2>/dev/null | openssl x509 -noout -dates
- Find the notAfter line. This line shows the expiry date.
- You can also use the checker above.
2026 note: New certificates are valid for a maximum of 200 days.