SLA & Uptime Calculator
How much downtime corresponds to your SLA?
SLA level of 99.99 % uptime results in the following periods of allowed downtime:
| Daily | 8.6s |
| Weekly | 1m 0.48s |
| Monthly | 4m 23s |
| Quarterly | 13m 8.9s |
| Yearly | 52m 36s |
Direct link to the page with these results:
uptime.is/99.99 (or uptime.is/four-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.