Uptime Calculator

Convert SLA uptime percentages to real downtime. See what 99.9% uptime actually means for your business.

Calculate Downtime

Common SLAs:
Downtime / Day
1m 26s
Downtime / Month
43m 50s
Downtime / Year
8h 45m

Common SLA Reference Table

UptimeNinesDowntime/DayDowntime/MonthDowntime/Year

What do "nines" mean?

In the hosting industry, uptime is often described by the number of nines. "Three nines" (99.9%) is the most common SLA for VPS hosting. InterServer and ScalaHosting both offer 99.9%+ uptime guarantees backed by SLA.