When does my SSL certificate expire?

Enter your domain into the free SSL Expiry Checker. It reads the live certificate your server presents and shows the exact expiry date plus how many days remain, so you can renew before browsers start warning visitors away.

How does the SSL expiry checker work?

It opens a real TLS connection to the domain on port 443, reads the certificate the server presents, and calculates the days remaining until the notAfter date. The result reflects the live certificate right now.

When should I renew my certificate?

Renew with at least 2 to 4 weeks to spare. Automated renewals can fail silently, and DNS or validation issues can delay issuance, so a comfortable buffer avoids outages.

What happens when a certificate expires?

Browsers show a full-page security warning and most visitors leave immediately. APIs and integrations also start failing, so an expired certificate is effectively downtime.

Does it check the whole certificate chain?

This tool focuses on the expiry of the certificate the server presents. For the full chain including intermediates and root, use the Certificate Chain Checker.

Why does the expiry differ from my dashboard?

CDNs and load balancers can serve a different certificate than your origin server. This tool checks what the public internet actually sees, which is what matters to visitors.

WEBSITE SECURITY TOOLS · FREE ONLINE TOOL

SSL Expiry Checker

Count down the days until any SSL certificate expiresNobody plans to let a certificate expire, but ninety days is short enough to sneak up on anyone. Enter a domain and get the countdown that matters: days remaining, at a glance.

✓ Free to use✓ No sign-up✓ Ready in your browser

// SSL EXPIRY CHECKER · GET STARTED

Use SSL Expiry Checker

Count down the days until any SSL certificate expires

// SSL EXPIRY CHECKER · HOW IT WORKS

How to use the SSL Expiry Checker

Enter domain

Enter the domain (e.g. example.com).

Read the certificate

Click "Check expiry" to read the live certificate.

See days left

See the days remaining and renewal advice.

// SSL EXPIRY CHECKER · ABOUT THIS TOOL

About the SSL Expiry Checker

An expired SSL certificate is one of the most embarrassing outages a site can have: browsers block visitors with a scary warning, and the fix is usually just a forgotten renewal. This tool connects to any HTTPS site, reads the certificate it serves, and counts down the days, hours and minutes until expiry. It grades the result red, amber or green so you know whether to act now or relax, and it catches CDN-versus-origin mismatches that dashboards miss.

Where it helps most

Routine that stops expiry surprises.

Monthly portfolio sweeps

Run a five-minute sweep across every domain you own to catch renewals automation missed.

Post-renewal confirmation

Verify the new date actually took effect, since auto-renew failures are silent until warnings appear.

Forgotten subdomains

Catch expired certificates on staging subdomains and old marketing sites attackers notice first.

Catching silent renew failures

Discover renewals that automation missed before visitors start seeing warnings.

Timing it right

What the countdown tells you.

Renew 30 days out

Let's Encrypt auto-renews at the 30-day mark by design; commercial authorities recommend the same buffer.

Check monthly minimum

Monthly checks at minimum, plus immediately after every renewal to confirm it took effect.

Pair with monitoring

Manual checks plus automated monitoring means nothing depends on anyone remembering a date.

SSL Expiry Checker: built for trust

Deliberately focused and fast to run across a whole portfolio, with no account and no scan queue. Pair it with the full certificate checker for complete coverage.

// SSL EXPIRY CHECKER · COMMON QUESTIONS

SSL Expiry Checker FAQs

How often should I check certificate expiry?

Monthly at minimum, and always immediately after a renewal to confirm it took effect. Better still, pair manual checks with automated monitoring so nothing depends on anyone remembering a date.

How far before expiry should I renew?

What is the difference between this and an SSL certificate checker?

Why did my auto-renewal fail?

tools-guide

SSL Certificate Checker: Verify Expiry and Validity Free

Free SSL certificate checker: verify any website's certificate issuer, expiry date, days remaining, covered domains and fingerprint. Avoid expiry outages.

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