e.g. 99.9 for 99.9% uptime
All calculation in your browser. No data sent to any server.
Yes. All calculation runs in your browser. No sign-up.
Compute allowed downtime or errors from SLO/SLA target and period. All in your browser.
Estimate bandwidth needed from page size and hits per day or month. All in your browser.
Add or subtract days, weeks, months, years. Difference between two dates. Date in N days. Local and UTC.