Free SSL Certificate Expiry Checker
See exactly when your SSL certificate expires before browsers start warning your visitors. We open a live connection, read the certificate, and show you the date, days left, and issuer.
Domain Pilot
Don't check by hand. Let us watch expiry for you.
Domain Pilot monitors your domain's SSL, registration, and uptime 24/7 and alerts you well before anything expires. Free for 5 domains, set up in two minutes.
Need to check the other one? Domain Expiry Checker →
How the SSL Expiry Check Works
1
You enter a domain
Type any domain that serves HTTPS — no login and nothing to install.
2
We open a live TLS connection
We connect over HTTPS and read the exact certificate your server presents.
3
We show when it expires
You get the expiry date, days remaining, and the issuer — or an honest “couldn’t determine”.
Frequently asked questions
- What does this SSL checker tell me?
- It opens a live TLS connection to your domain and reads the certificate the server presents, then tells you when that certificate expires, how many days are left, and who issued it. It reflects what browsers see right now — it is not a scan of every certificate you have ever used.
- What happens when an SSL certificate expires?
- Once a certificate expires, browsers stop trusting it and show a full-page security warning (for example “Your connection is not private”) instead of your site. Most visitors leave immediately, and API clients and integrations that verify certificates will start failing. Renewing before the expiry date avoids the outage entirely.
- How early should I renew my certificate?
- Renew at least a couple of weeks before expiry so you have time to install the new certificate and catch any issues. Many certificates auto-renew (for example Let’s Encrypt at 30 days out), but auto-renewal can silently fail, so it is worth confirming the live certificate actually updated.
- Why couldn’t you determine the expiry date?
- A few things can prevent a reading: the domain does not serve HTTPS, the TLS handshake failed, the host was unreachable, or the certificate could not be parsed. When that happens we say so plainly rather than guessing — we never show a made-up date. Double-check the domain is correct and reachable over HTTPS and try again.
- Does checking my certificate change anything?
- No. We only open a read-only TLS connection to inspect the certificate your server already presents. Nothing on your side is modified, and no certificate is issued, renewed, or revoked.