Developer Experience Tools
Developer Onboarding Time Calculator
Enter engineer level, days to first commit, and salary to compute onboarding cost and identify where time is lost vs benchmarks.
No data is transmitted — everything runs locallyTool
Example — Representative default scenario — current days 14 · target days 9 · engineers per quarter 12.
Days to first commit
12
benchmark: 21 days for role
Direct cost
$8,307.692
new hire salary proration
Senior support cost
$2,700
25% of senior time
Total onboarding cost
$11,007.692
per hire
About this tool
Developer Onboarding Time Calculator
The Developer Onboarding Time Calculator computes onboarding cost, productivity loss, and supporting senior overhead from time-to-first-commit and salary.
• Calculate cost of slow onboarding for an engineering efficiency report
• Benchmark time-to-first-commit against role-level targets
• Quantify ROI of improving onboarding documentation
• Identify where onboarding time is lost vs industry benchmarks
Affiliate disclosure
Uptime, incident, and on-call management. Better Stack provides status pages, incident management, and on-call scheduling for engineering teams.
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External site · Independent provider · We may receive a commission · Not a recommendation
FAQ
What does this tool tell you?
The Developer Onboarding Time Calculator computes onboarding cost, productivity loss, and supporting senior overhead from time-to-first-commit and salary.
What affects the result most?
Time to first commit: days from start until first production contribution — key onboarding KPI. Time to full productivity: industry average 3-6 months for senior, 6-12 for junior engineers. Onboarding cost: salary × (1 - productivity_pct) × ramp_months = productivity loss during ramp.
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.