Server Uptime Percentage Calculator
Convert downtime (in minutes or hours) to an uptime percentage.
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Server Uptime Percentage
99.9772%
Equals 10m of downtime per month.
The "Nines" of Uptime
Understanding Service Reliability
Hosting providers often promise high uptime percentages like "99.9%". While that sounds great, what does it actually mean in terms of real-world downtime? This calculator helps you convert a specific amount of downtime (in minutes or hours) over a period into its corresponding uptime percentage, putting those numbers into perspective.
Frequently Asked Questions
What is server uptime?
Server uptime is the percentage of time that a server is online and operational. It is a critical metric for reliability. Hosting providers often guarantee a certain uptime level (e.g., 99.9%) in their Service Level Agreement (SLA).
What do the "nines" mean?
The "nines" are a common way to describe uptime availability. "Five nines" (99.999%) is considered the gold standard for high-availability systems, allowing for only a few minutes of downtime per year.