How do I check an SSL certificate's expiration date?

Every SSL certificate carries a valid-to date that marks when it expires. Enter your website above and our checker reads that date live, showing the exact expiration date and how many days are left.

How long is an SSL certificate valid?

Most SSL certificates are now valid for around 90 days, and many certificate authorities issue nothing longer. Certificates once lasted a year or more, but validity periods keep shrinking — which is why automated renewal matters.

What happens when an SSL certificate expires?

When a certificate expires, browsers stop trusting it and show every visitor a full-page security warning, flagging the site as not secure. The fix is to renew and reinstall the certificate promptly.

Can I get alerted before my SSL certificate expires?

Yes. SSLCanary watches your certificates and emails you well before they expire, at lead times you choose. Monitoring is free for up to 5 domains — no card, and nothing to install.

SSL Expiry Checker

See exactly when a site's SSL certificate expires and how many days are left, in plain English.

Type a website above and press Check. You'll get the status and its exact expiry date, with the technical details a step away.

How it works

Enter a hostname

Type any website, like example.com — just the hostname, no https:// and nothing else to install.

We read the cert

We connect live and read the certificate's valid-to date straight from the server, exactly as browsers see it.

See days left

Get the exact expiration date and how many days remain, in plain English — no jargon, no signup.

Common questions

How do I check an SSL certificate's expiration date?: Every SSL certificate carries a valid-to date that marks when it expires. Enter your website above and our checker reads that date live, showing the exact expiration date and how many days are left.
How long is an SSL certificate valid?: Most SSL certificates are now valid for around 90 days, and many certificate authorities issue nothing longer. Certificates once lasted a year or more, but validity periods keep shrinking — which is why automated renewal matters.
What happens when an SSL certificate expires?: When a certificate expires, browsers stop trusting it and show every visitor a full-page security warning, flagging the site as not secure. The fix is to renew and reinstall the certificate promptly.
Can I get alerted before my SSL certificate expires?: Yes. SSLCanary watches your certificates and emails you well before they expire, at lead times you choose. Monitoring is free for up to 5 domains — no card, and nothing to install.

Want this watched automatically across all your domains? SSL certificate monitoring See plans & pricing