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Availability

Uptime and SLA explained more clearly.

This section helps turn percentages such as 99.9% or 99.99% into something more tangible: how many minutes of downtime they really allow in a day, week, month or year.

Availability Allowed downtime Clear comparison
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99.9% ≠ 100%

A high SLA still allows downtime, and that margin can matter more than expected.

Real minutes

The calculator turns an abstract percentage into more understandable downtime.

Tool

Primary tool in this section

This tool turns availability percentages into maximum allowed downtime so service-level comparisons are easier to read and discuss.

Uptime and SLA calculator

Turn an availability percentage into the maximum downtime it actually allows.

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This section follows the same editorial standard as the rest of the site: explain clearly something that is often published with more contractual or technical language than needed.

How to interpret this section

What it solves, how to read it and what an SLA does not promise

What it solves

This section turns abstract percentages into a more understandable question: how much downtime could still be compatible with a published availability promise.

How to read the result

The final figure helps compare service levels and size operational risk. It does not mean a platform will fail for exactly that amount of time, only that the percentage still allows that theoretical margin.

Key assumptions

  • It starts from a simple reading of the published availability percentage.
  • Calculation windows vary across providers, products and contractual documents.
  • An SLA is a service reference, not a replacement for resilience design.

Limits of this section

  • It does not replace reading exclusions, credits or contract conditions.
  • It does not cover incident response, multi-zone architecture or full business continuity.
  • The tool simplifies the math to make it understandable, not to provide legal advice.

Official sources

The interpretation of availability, exclusions and critical SLA reading is grounded in official documentation from major providers.

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