PR Size Analyzer
Analyze your pull request sizes and get recommendations. Learn the optimal PR size for faster reviews and fewer bugs.
Our Take
The optimal PR size isn't about lines of code - it's about cognitive load.
A 50-line PR that changes 10 files is harder to review than a 200-line PR in one file. The real metric is how much mental effort a reviewer needs to hold context. This tool helps you find the sweet spot where changes are meaningful but still reviewable in a single focused session.
"PRs over 400 lines are 83% more likely to ship without meaningful review."
— CodePulse research on 3.4 million PRs
Enter PR Details
If provided, we'll calibrate the review time estimate to your team's pace.
Enter the lines of code changed to analyze your PR size.
Research Behind This Tool
This tool is based on extensive research from leading technology companies on the relationship between PR size and code quality.
Google Research
PRs under 200 lines have a 15% higher approval rate on first review. Smaller changes lead to faster iteration cycles.
Microsoft Research
PRs over 400 lines take 2x longer to review. Review quality drops significantly after 60-90 minutes of continuous review.
Industry Studies
Larger PRs have higher defect rates. Each additional 100 lines increases the probability of introducing a bug by approximately 15%.
PR Size Best Practices
Aim for 100-200 lines per PR
Keep under 5-10 files when possible
One logical change per PR
By feature, layer, or refactor vs. feature
Frequently Asked Questions
The optimal PR size is between 100-200 lines of code. Research from Google shows PRs under 200 lines have 15% higher first-pass approval rates, while Microsoft studies confirm PRs over 400 lines take twice as long to review. Aim for changes that can be reviewed in under 30 minutes to maintain review quality.
Want to track this automatically?
CodePulse connects to your GitHub and calculates these metrics in real-time. No more manual data entry or spreadsheets.
Free tier available. No credit card required.
Related Tools
Bus Factor Calculator
Calculate your team's bus factor and knowledge concentration risk. Identify critical knowledge silos before they become problems.
Technical Debt Cost Calculator
Quantify the cost of technical debt. Calculate how much productivity you're losing and build a case for refactoring.
SPACE Framework Assessment
Assess your team across all 5 SPACE dimensions: Satisfaction, Performance, Activity, Communication, and Efficiency. Get a visual radar chart and recommendations.