🔒 Security Tool · Free · No signup
SSL Certificate Checker
Check any domain's SSL certificate — expiry date, issuer, validity status, and days remaining. Instant results.
Enter domain to check
Try:
google.com
github.com
cloudflare.com
hitechies.com
expired.badssl.com
What we check
Certificate validity✓
Expiry date✓
Days remaining✓
Certificate issuer✓
Common name✓
Certificate age✓
Best practices
Renew before expiry30+ days
Enable auto-renewalAlways
Free cert optionLet's Encrypt
Max cert validity398 days
Warning threshold< 30 days
Critical threshold< 7 days
Frequently asked questions
What does an SSL checker do? +
It queries the domain to retrieve the TLS/SSL certificate and shows the expiry date, issuer, common name, and validity status — helping you verify the certificate is installed correctly and not about to expire.
How often do SSL certificates expire? +
Since 2020, SSL certificates are issued for a maximum of 398 days. They must be renewed before expiry to avoid browser security warnings and potential downtime.
What happens when an SSL certificate expires? +
Browsers show a full-page security warning blocking visitor access. Search engines may penalise or delist the site. Set calendar reminders 60 and 30 days before expiry, or enable auto-renewal on your hosting provider.
What is Let's Encrypt? +
Let's Encrypt is a free Certificate Authority used by over 300 million websites. Ghost, Cloudflare, and most hosting providers integrate with it automatically to issue and renew certificates for free.
Why might my SSL check fail? +
Some domains block automated certificate lookups, or the certificate data may not yet be available in public logs. Try checking directly in your browser by clicking the padlock icon in the address bar for the most accurate result.