Guides ·
How to use SSL Expiry Checker
SSL Expiry Checker. Days until certificates expire, in bulk. Let's Encrypt certificates last 90 days and renew automatically after 60.
The short answer
To check SSL expiry dates, enter up to 20 domains. ClickZM reads each certificate's notAfter date and lists the days remaining, sorted so certificates that expire soonest (or have already expired) come first.
A browser cannot make this check itself, so ClickZM's server does it, blocks private addresses, and does not store the lookup.
How to use it
Enter the website address, domain or IP you want to check.
Click the button to run the SSL Expiry Checker.
Read the results; warnings and errors are highlighted with an explanation.
Fix any issue, then run the check again to confirm.
Limits worth knowing
How early should I renew? Let's Encrypt certificates last 90 days and renew automatically after 60. For paid certificates, renew at least 30 days ahead.
Will certificate lifetimes get shorter? Yes. The CA/Browser Forum agreed in 2025 to cut maximum lifetimes in steps to 47 days by 2029, so automation matters.