SLA & Uptime Calculator

How much downtime corresponds to your SLA?

SLA level of 99.9 % uptime results in the following periods of allowed downtime:


Daily


Weekly


Monthly


Quarterly


Yearly

Direct link to the page with these results: uptime.is/99.9 (or uptime.is/three-nines)

The SLA calculations assume a requirement of continuous uptime (i.e. 24/7 all year long) with additional approximations as described in the source. uptime.is was originally implemented in newLISP, which had powered uptime and downtime calculations for more than a decade.

For convenience, there are special CEO and SEO friendly links for N nines: three nines, four nines, five nines, six nines etc.