Code Review Time Estimator
Estimate how long code reviews should take based on PR size and complexity. Set realistic review SLAs for your team.
Review Parameters
Enter lines of code above to estimate review time.
Research Behind the Estimates
Cisco Code Review Study: Found that reviewers find fewer defects after 60-90 minutes of continuous review. Beyond this point, fatigue significantly reduces review quality.
Optimal Review Pace: 200-400 lines of code per hour provides the best balance between thoroughness and efficiency. Faster reviews miss defects; slower reviews don't find proportionally more.
Diminishing Returns: Reviews beyond ~400 lines in a single session show sharply diminishing returns. Splitting large PRs leads to better outcomes than marathon review sessions.
<15 min, optimal for small changes
15-45 min, typical feature work
45-90 min, consider breaks
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