How much downtime does 99.999% uptime allow?
99.999% (five nines) uptime allows 5m 15s of downtime per year. Here is the full budget, by period.
| Per day | 1s |
| Per week | 6s |
| Per month | 26s |
| Per quarter | 1m 18s |
| Per year | 5m 15s |
| Period | Allowed downtime |
|---|---|
| Per day | 1s |
| Per week | 6s |
| Per month | 26s |
| Per quarter | 1m 18s |
| Per year | 5m 15s |
Detection matters as much as the budget. With 5-minute monitoring you can burn minutes of this allowance before you even detect an outage. PingInsight's true 1-second checks catch it almost immediately.
Back to the full uptime calculator or see how 1-second checks help you stay within budget.