Uptime & Error Rate Monitor | Website Availability Checker

Check your website's current HTTP status, response time, and historical uptime percentage. Essential for DevOps, site reliability, and SEO performance.

① Enter Your Website URL

We'll check the site's HTTP status, response time, and simulate 30-day uptime history.

What is Uptime & Error Rate?

Uptime measures the percentage of time a website or service is available and accessible to users. A 99.9% uptime means the site is down for about 8.76 hours per year. Error rate is the percentage of requests that result in HTTP errors (4xx, 5xx). Monitoring these metrics helps you:

  • Maintain user trust – Frequent downtime drives visitors away.
  • Improve SEO – Google considers site availability in ranking.
  • Optimize performance – Slow response times hurt conversion rates.
  • Meet SLA commitments – Essential for businesses with service level agreements.

How to Improve Your Uptime & Reduce Errors

Reliable Hosting

Choose a reputable hosting provider with a proven track record of high uptime (99.9%+).

Monitor Error Logs

Regularly check server logs for 500 errors, 404s, and other anomalies that degrade user experience.

Optimize Performance

Use caching, CDN, and optimized code to reduce response times and prevent timeouts.

Set Up Alerts

Integrate with monitoring tools (e.g., UptimeRobot, Pingdom) to get notified instantly when downtime occurs.

Frequently Asked Questions

What is a good uptime percentage?

For most websites, 99.9% uptime is considered excellent (down for ~8.8 hours/year). Critical services aim for 99.99% (52 minutes/year). Anything below 99% indicates serious reliability issues.

How accurate is the historical data?

Our tool simulates historical data for demonstration. For real monitoring, we recommend using dedicated services that record actual uptime checks.

Does uptime affect SEO?

Yes, Google considers site availability and page speed as ranking factors. Frequent downtime can negatively impact your search rankings.

What does a 500 error mean?

HTTP 500 (Internal Server Error) indicates a problem on the server side, often due to coding errors, database issues, or server overload. It requires immediate investigation.