Uptime calculator
How much downtime does an uptime target allow? Enter any percentage, or work out the uptime of an outage.
Common uptime levels
| Uptime | Per day | Per week | Per month | Per year |
|---|---|---|---|---|
| 99% | 14 min | 1 h 41 min | 7 h 18 min | 3 days 15 h |
| 99.5% | 7 min | 50 min | 3 h 39 min | 43 h 50 min |
| 99.9% | 1 min | 10 min | 44 min | 8 h 46 min |
| 99.95% | 1 min | 5 min | 22 min | 4 h 23 min |
| 99.99% | <1 min | 1 min | 4 min | 53 min |
| 99.999% | <1 min | <1 min | <1 min | 5 min |
A month is taken as 30.44 days, a year as 365.25 days. Compare with real services in our reliability rankings.