SSLWatchSSL checker – check any SSL certificate online
Enter a domain to see its SSL certificate expiry date, days left, issuer, full chain, SANs and TLS version – checked live, in about a second.
Try: google.com · github.com · confirmurl.com
Why check your SSL certificate?
An expired or misconfigured SSL/TLS certificate shows visitors a full-page “Your connection is not private” warning, breaks apps and APIs, and hurts search rankings. Certificate lifetimes are shrinking – 200 days in 2026 and 47 days by 2029 – so checking expiry dates regularly matters more than ever.
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Frequently asked questions
What does an SSL checker do?
An SSL checker connects to a website over HTTPS, reads the SSL/TLS certificate the server presents and shows the issuer, expiry date, days left, certificate chain, covered domain names (SANs) and the TLS version.
How do I check if a website's SSL certificate is valid?
Enter the domain above. You will see "Valid & trusted" when the certificate is in date, matches the domain and chains to a trusted root; otherwise the exact error is shown.
How do I check an SSL certificate expiration date?
Enter the domain – the result shows the exact expiry date and days left. For many domains use the bulk checker and export CSV or calendar reminders.
Is SSLWatchLive free?
Yes. It is free, needs no sign-up and has no ads.
Does it check domain expiry too?
Yes. It looks up the domain registration expiry date and registrar through RDAP, so you can renew both on time.