Code Review Time Calculator
Review hours from lines changed.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Review hours per reviewer
- 2.83
- Total team hours
- 5.67
- Expected defects
- 10.2
- PR size verdict
- Too large — split it
Quick answer
Effective code review runs at 200–400 lines per hour; faster reviews miss defects.
Hours = lines ÷ review rate
How to use the Code Review Time Calculator
- 1Enter lines changed in the pull request.
- 2Set your team's review rate.
- 3Enter how many reviewers are assigned.
Frequently asked questions
What PR size is ideal?
Under 400 lines — defect detection collapses beyond that.
Do two reviewers double detection?
No, the second reviewer adds far less than the first.