Free tools
Free tools, no signup
Small, honest tools: some run the same probe fleet and certificate checks RealUptime runs for paying customers, others are the exact math behind an SLA or a downtime budget. No account required, and each one shows exactly what it checked or computed and how.
Is my website down?
Enter a URL and get a live status code and response time from a real check, right now.
SLA / uptime calculator
Enter an uptime target and see exactly how much downtime it allows per month and year.
Downtime cost calculator
Estimate what a given amount of downtime costs, using your own monthly revenue.
SSL certificate checker
Enter a hostname and see its certificate's expiry date, issuer, and days remaining.
Metered pricing cost calculator
Compare Statuspage's published per-subscriber pricing to RealUptime's flat rate for your numbers.
Status page grader
Paste any status page URL and get a free report card on regional visibility and incident history.
Why these are free
The checker, certificate, and grader tools run a single, one-off check, the kind of thing you might otherwise do with curl or a browser; the calculators are just the arithmetic behind an SLA target or a downtime budget, shown in full. Either way, they’re here because they cost little to expose publicly and stay honest about what they do and don’t know. If you need a real check running continuously, with alerts, that’s RealUptime’s actual product: see our outage tracker for 940 popular services we already watch, or start monitoring your own site.