Uptime Calculator
Free online uptime calculator. Convert SLA percentages to downtime per year, month, week, and day. Plan availability targets for your services.
Ninety-nine point nine percent uptime sounds close enough to perfect that it's easy to miss just how much downtime it actually allows, over eight hours a year, which only becomes obvious once that SLA percentage actually gets converted into real hours and minutes rather than left as an abstract number on a vendor's marketing page. This tool converts an SLA uptime percentage into actual downtime allowed per year, month, week, and day, turning a vague percentage into a concrete number worth comparing against an actual requirement.
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Useful for checking whether a cloud provider's SLA guarantee is actually good enough for a specific use case once it's converted into real hours, negotiating an SLA commitment by understanding exactly what a given percentage promises in practical terms, or setting an internal availability target and knowing exactly how much downtime margin that target actually leaves.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline