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SSL Certificate Checker

Free SSL Certificate
Checker

Verify HTTPS validity, check expiry dates, and get the SSL grade for any website — free, instant, no login.

About SSL Certificates

What is an SSL certificate?

An SSL/TLS certificate encrypts data between a browser and a web server, ensuring secure HTTPS connections.

What does the SSL grade mean?

A+ and A grades indicate excellent configuration. B is good but improvable. C, F, or T grades indicate issues that need fixing.

What happens when SSL expires?

Browsers show a security warning and visitors may leave. Renew certificates at least 30 days before expiry.

Is SSL required for SEO?

Yes. Google uses HTTPS as a ranking signal. Sites without valid SSL certificates rank lower and browsers warn visitors.

Frequently Asked Questions

How do I check if an SSL certificate is valid?

Enter the domain name in the SSL checker above and click "Check SSL". The tool will verify the certificate validity, expiry date, issuer, and security grade.

What does an SSL grade of A+ mean?

An A+ grade from Qualys SSL Labs means the server has excellent SSL/TLS configuration — strong cipher suites, HSTS enabled, and no known vulnerabilities.

How often do SSL certificates expire?

SSL certificates are typically valid for 90 days (Let's Encrypt) or 1–2 years (paid CAs). You should renew at least 30 days before expiry.

Is this SSL checker free?

Yes. DomainsMesh SSL Certificate Checker is completely free — no account, no sign-up, unlimited checks.

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