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SLA Uptime Calculator
Convert SLA uptime percentages to real downtime. How much downtime does 99.9% actually mean?
Free SLA uptime to downtime converter. Calculate how much downtime 99.9% (three nines), 99.95%, 99.99% (four nines), and 99.999% (five nines) SLA availability means per day, week, month, and year. Used by DevOps engineers, support teams, and SREs for SLA planning and incident budgeting.
SLA Uptime Percentage
%
At 99.9% uptime (three nines), your allowed downtime is:
1.4m
per day
10.1m
per week
43.8m
per month
8h 46m
per year
Quick Reference
| SLA | Daily | Monthly | Yearly |
|---|---|---|---|
| 99% | 14.4m | 7h 18m | 3d 15h |
| 99.5% | 7.2m | 3h 39m | 1d 19h |
| 99.9% | 1.4m | 43.8m | 8h 46m |
| 99.95% | 43s | 21.9m | 4h 23m |
| 99.99% | 9s | 4.4m | 52.6m |
| 99.999% | 1s | 26s | 5.3m |
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