Free Tool
SLA Uptime Calculator
Convert SLA percentages (99%, 99.9%, 99.99%) into allowed downtime minutes per year, month, and day.
Allowed downtime for 99.9% SLA
8.76 hours
Per Year
43.80 minutes
Per Month
1.44 minutes
Per Day
8.76 hrs
Total Hours/Year
Tip: Most uptime monitoring tools check every 1-5 minutes. For 99.99%+ SLA requirements, consider Better Stack or Site24x7 with 30-second checks.
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