Uptime Targets

What Does 99% Uptime Mean?

Calculate the exact allowed downtime budget for 99% availability, view industry standards, and copy ready-to-use SLA contract clauses.

99% Allowed Downtime Budget

Daily Downtime

14m 24s

Allowed in 24h window

Weekly Downtime

1h 40m 48s

Allowed in 7-day window

Monthly Downtime

7h 18m 17s

Allowed in 30.4 days

Yearly Downtime

3d 15h 39m 29s

Allowed in 365 days

Understanding Two Nines Availability (99%)

A 99% uptime target allows for up to 7 hours and 18 minutes of unplanned downtime per month. While this might sound reasonable for non-critical tools, it is generally considered low for production software applications, web APIs, or SaaS applications where customers expect seamless access.

Industry Uptime Standard

Commonly targeted by internal dev environments, non-critical SaaS tools, or hobby projects where occasional service gaps do not impact critical operations.

SLA Clause Template

Service Availability Commitment: The Provider commits to maintaining a Service Uptime of at least 99.0% during each calendar month. Service Uptime is calculated as total minutes in the month minus total minutes of unplanned downtime, divided by total minutes. Exclusions: Planned maintenance windows (notified at least 48 hours in advance) and Force Majeure events are excluded from the downtime calculation.

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