Observability & SRE
On-Call Rotation Calculator
Enter team size, shift length, and incident volume to compute per-engineer on-call hours, nights/weekends burden, and alert resolution time burden per week.
Calculations run locally in your browserTool
About this tool
On-Call Rotation Calculator
The On-Call Rotation Calculator computes per-engineer weekly on-call hours, nights/weekends burden, and incident resolution time from rotation size and incident volume.
• Calculate weekly on-call hours per engineer before presenting a staffing request
• Model the burden reduction from growing the on-call rotation from 3 to 6 engineers
• Quantify the follow-the-sun benefit for a globally distributed team
• Compute incident resolution time burden per engineer per week for a burnout risk assessment
Affiliate disclosure
Uptime, incident, and on-call management. Better Stack provides status pages, incident management, and on-call scheduling for engineering teams.
View on-call management options with Better Stack
External site · Independent provider · We may receive a commission · Not a recommendation
FAQ
What does this tool tell you?
The On-Call Rotation Calculator computes per-engineer weekly on-call hours, nights/weekends burden, and incident resolution time from rotation size and incident volume.
What affects the result most?
Weekly on-call hours per engineer: 168h / team_size for a simple round-robin rotation. Nights and weekends burden: 104 hours/week of off-hours × 1/team_size per engineer. Handoff frequency: weekly vs bi-weekly — fatigue tradeoff with context retention.
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.