SSL Tools

SSL Expiry Checker

Get the exact expiry date of a site's HTTPS certificate and a countdown of the days left to renew it.

Not sure what to enter? Try an example: github.com

Free & instant No signup How to use FAQ

Valid

github.com

Expiry Date

Nov 29, 2026

Remaining Days

42 days

Last checked: 0 seconds ago Live

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100/100

Result Summary

Passed

SSL certificate is valid

Certificate has 42 days remaining

Trusted by browsers (valid chain to a trusted root)

Hostname matches the certificate

Certificate chain is complete

TLS supported (TLSv1.3)

Enter a domain to read the expiry date straight from its live certificate - handy for checking that automatic renewal actually worked.

Recent Searches

SSL Expiry Checker - github.com 0 seconds ago

How do I find out when an SSL certificate expires?

Enter the domain above and the checker reads the certificate the server is using right now and shows its expiry date and the number of days remaining. Once a certificate expires, browsers show a full-page security warning, so knowing the date in advance prevents an avoidable outage.

How to use the SSL expiry checker

Enter the domain you want to check in the box above.
Click Check Expiry.
Read the expiry date and the days remaining.
If fewer than 30 days remain, renew the certificate or confirm your automatic renewal (for example Let's Encrypt / certbot) is running.

Related checks

For the full certificate details - issuer, covered names and chain - use the SSL Certificate Checker.
A domain that lapses takes the certificate down with it - check it with the Domain Expiry Checker.

JustChecker alerts you automatically before any SSL certificate expires.

Frequently Asked Questions

Plan to renew with at least 2-4 weeks to spare. Automated certificates usually renew about 30 days before the end, so a certificate under 20 days often means renewal has failed.

The web server is probably still using the old file. Reload or restart it (for example sudo systemctl reload nginx) so it picks up the new certificate, then check again.

Yes - add the site to JustChecker monitoring and you get an email well before the certificate runs out, so you never find out from a visitor.

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