Calculate the amount of time that a service is available.
The uptime calculator converts an availability percentage into the actual uptime and downtime it allows per day, week, month and year. For example, 99.9% availability still allows about 43 minutes of downtime per month.
Use it to understand the SLA of a hosting provider, to set realistic targets for your own services, or to explain to your team what each extra nine really means.
Day, week, month and year.
Both values for each period.
Percentages with up to 6 decimals.
Calculated in your browser.
99.999% availability, which allows about 5 minutes of downtime per year.
It's a common hosting SLA, allowing roughly 8 hours and 46 minutes of downtime per year.
Short outages don't. Long or frequent ones make search engines crawl less and can drop pages temporarily.
A month is counted as 30 days and a year as 365 days.