How do I check if an SSL certificate is valid?

An SSL certificate is valid when it's trusted, unexpired, and issued for the exact hostname you're visiting. Enter your website above and our SSL checker reads the live certificate and confirms, in plain English, whether it's valid.

How do I know my SSL certificate is installed correctly?

A certificate is installed correctly when the server presents the right hostname, current dates, and a complete chain to a trusted root. Our SSL certificate checker tests all of that live and tells you if anything is off.

What does this SSL checker show me?

It shows the certificate's issuer, the hostnames it covers, its valid-from and valid-until dates, and whether the chain builds to a trusted root — the core checks behind a browser's trust. It doesn't cover revocation or browser-specific policies.

Is this SSL certificate checker free?

Yes — this TLS certificate checker is completely free, with no signup and no card. Want us to keep checking your sites and warn you before anything breaks? Add them to a free SSLCanary account.

Free SSL Certificate Checker

Enter any website and we'll tell you, in plain English, whether its SSL certificate is valid and when it expires.

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 website

Just the hostname, like example.com. No http:// needed.

We check it live

We connect to the site and read its certificate, right now.

Get a plain answer

Valid or not, and the exact date it expires.

Common questions

How do I check if an SSL certificate is valid?: An SSL certificate is valid when it's trusted, unexpired, and issued for the exact hostname you're visiting. Enter your website above and our SSL checker reads the live certificate and confirms, in plain English, whether it's valid.
How do I know my SSL certificate is installed correctly?: A certificate is installed correctly when the server presents the right hostname, current dates, and a complete chain to a trusted root. Our SSL certificate checker tests all of that live and tells you if anything is off.
What does this SSL checker show me?: It shows the certificate's issuer, the hostnames it covers, its valid-from and valid-until dates, and whether the chain builds to a trusted root — the core checks behind a browser's trust. It doesn't cover revocation or browser-specific policies.
Is this SSL certificate checker free?: Yes — this TLS certificate checker is completely free, with no signup and no card. Want us to keep checking your sites and warn you before anything breaks? Add them to a free SSLCanary account.

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