Free Website Performance & Diagnostic Tools
SLA Uptime & Downtime Calculator
Calculate allowed downtime for 99%, 99.9%, 99.99%, and 99.999% SLAs across daily, weekly, monthly, and annual windows. Estimate business downtime revenue loss.
Apdex Score Calculator & Analyzer
Convert application latency histograms into standardized Apdex user satisfaction ratings (Satisfied, Tolerating, Frustrated) across customizable response thresholds.
Free Website Uptime & Latency Diagnostic
Test website availability, HTTP response status codes, DNS resolution latency, and TCP/TLS handshakes from multi-region global check probe nodes.
Free SSL Certificate Checker & Expiry Test
Inspect SSL/TLS certificate validity, expiration dates, Certificate Authority (CA) trust chains, SAN coverage, and TLS protocol security.
Upgrade from One-Off Tools to Automated Monitoring
One-off diagnostic checks are great for troubleshooting, but production systems require continuous 24/7 oversight. SimpleOps monitors your websites, APIs, and servers every 60 seconds across 15+ global check regions.