Site Reliability Engineering
Toil Calculator
Enter weekly toil hours, engineer count, and automation effort to compute annual toil cost, automation ROI, and break-even timeline.
Calculations run locally in your browserTool
About this tool
Toil Calculator
The Toil Calculator computes annual toil cost, automation ROI, and break-even timeline from weekly toil hours, team size, and automation effort.
• Calculate annual cost of manual deployment toil for a budget proposal
• Compute automation ROI to justify a toil reduction sprint
• Determine break-even point for automating a repetitive SRE task
• Measure toil percentage against Google SRE's 50% target threshold
Next step
Continue with Utility Matrix tools for the next decision in this workflow.
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FAQ
What does this tool tell you?
The Toil Calculator computes annual toil cost, automation ROI, and break-even timeline from weekly toil hours, team size, and automation effort.
What affects the result most?
Toil = manual, repetitive, tactical work that scales with service load — not engineering work. Google SRE target: <50% of SRE time on toil — above this, reliability work suffers. Toil cost: hours_per_week × engineer_count × hourly_rate × 52 = annual cost.
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.