Uptime Calculator
v1.0.0Convert uptime percentages to allowed downtime per year, month, week, and day
Converts any uptime percentage to concrete downtime budgets per year, month, week, and day — and reverses the calculation from a downtime budget back to a required uptime percentage.
How to use- →Click a preset button (99%, 99.9%, etc.) for common SLA tiers or drag the slider for a custom value.
- →Read the breakdown cards to see the allowed outage in human-readable form for each period.
- →Use the Reverse Calculator to enter a downtime budget in minutes and find the matching uptime percentage.
- →Check the reference table at the bottom to compare all standard SLA tiers side by side.
Uptime Percentage
%
Allowed Downtime Per Year
8h 45m 58s
525.9600 min
Allowed Downtime Per Month
43m 50s
43.8300 min
Allowed Downtime Per Week
10m 5s
10.0800 min
Allowed Downtime Per Day
1m 26s
1.4400 min
| SLA | Downtime / Year | Downtime / Month | Downtime / Day |
|---|---|---|---|
| 99% | 3d 15h 39m | 7h 18m 18s | 14m 24s |
| 99.9% | 8h 45m 58s | 43m 50s | 1m 26s |
| 99.95% | 4h 22m 59s | 21m 55s | 43.20 s |
| 99.99% | 52m 36s | 4m 23s | 8.64 s |
| 99.999% | 5m 16s | 26.30 s | 864.0 ms |
Reverse Calculator
Enter your allowed downtime in minutes to calculate the required uptime percentage.