SLA Downtime Budget Calculator
Translate a time-based availability percentage into allowed downtime over an entered period.
Your result
EVERYDAYEnter your values and select calculate.
On this page How it works & practical examples
How to use the SLA Downtime Budget Calculator
Define the evaluation period before comparing availability percentages. A monthly budget depends on the number of days counted. The result converts the unavailable fraction into minutes and hours.
The calculation
Worked example
99.9% time-based availability over 30 days permits 43.2 minutes of downtime under this simple model.
Assumptions and limits
Contract maintenance exclusions, regional service boundaries, partial outages and request-based availability are not applied. This is not a determination of service credits or contract compliance.
Common questions
Is a month always 30 days here?
No. Thirty is an editable example. Enter the actual evaluation period.
Can I use a request-success percentage?
This calculator is time-based. Request-based SLIs need request counts rather than elapsed time.