{"id":4859,"date":"2026-06-19T18:29:01","date_gmt":"2026-06-19T18:29:01","guid":{"rendered":"https:\/\/www.copahost.com\/blog\/?p=4859"},"modified":"2026-06-19T23:08:41","modified_gmt":"2026-06-19T23:08:41","slug":"what-is-uptime","status":"publish","type":"post","link":"https:\/\/www.copahost.com\/blog\/what-is-uptime\/","title":{"rendered":"What Is Uptime? 99.9% Uptime Explained for Websites"},"content":{"rendered":"\n

Uptime is the percentage of time your website stays online and reachable over a given period. It’s the clearest measure of a hosting provider’s reliability \u2014 and the reason “99.9% uptime” appears on nearly every hosting plan. The catch is that even 99.9% still allows almost 9 hours of downtime per year, so the number matters more than it first looks.<\/strong><\/p>\n\n\n\n

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If you’ve shopped for web hosting, you’ve seen uptime guarantees everywhere: 99.9%, 99.99%, sometimes “five nines.” They sound almost identical, but the real-world difference between them is large. This guide explains what uptime actually is, what each percentage means in real downtime, why it matters for your site, how it’s measured, and what to look for in a guarantee. For the bigger picture of how hosting works, see our guide on what web hosting is<\/a>.<\/p>\n\n\n\n

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