DevSecOps
SLO Burn Rate Calculator
Enter error count, total request count, and window size to calculate your current SLO burn rate, error rate, and alert level. A burn rate above 1x means you are consuming your error budget faster than your SLO window allows.
No data is transmitted — everything runs locallyTool
Example — 100 errors / 100,000 requests · 99.9% SLO
Burn Rate
1.00×
relative to error budget
Error Rate
0.1000%
100 / 100,000
Budget/Hour
4.2%
at current rate
Status
Elevated
About this tool
SLO Burn Rate Calculator
The SLO Burn Rate Calculator computes error budget burn rate from error count, total requests, and window size, returning burn rate, alert level, and error rate.
• Check burn rate before deciding whether to page the on-call engineer
• Calculate remaining error budget for a sprint retrospective
• Model how a degraded dependency affects SLO burn rate
• Generate burn rate evidence for a post-incident review
Affiliate disclosure
Uptime, incident, and on-call management. Better Stack provides status pages, incident management, and on-call scheduling for engineering teams.View options with Better Stack
FAQ
What does this tool tell you?
The SLO Burn Rate Calculator computes error budget burn rate from error count, total requests, and window size, returning burn rate, alert level, and error rate.
What affects the result most?
Error rate = errors / total_requests. Burn rate = error_rate / (1 - SLO_target). Burn rate > 1x: consuming budget faster than allowed.
How should I use the result?
The calculation is deterministic — the same inputs always produce the same output — so the most useful workflow is to vary one input at a time and see which factor moves the result most. That tells you where to focus your attention before committing to a decision.
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