How many lines of code does a developer write per day?

Industry benchmarks: 10-50 LOC/day of production code. High-quality codebases average 10-20 LOC/day. During feature sprints, 50-100 LOC/day is possible but uncommon.

Is LOC a good productivity metric?

LOC is a poor productivity metric alone. Deleting 100 lines that improves quality counts as negative productivity. Better metrics: story points completed, features shipped, defect escape rate.

How do AI coding assistants affect LOC/day?

GitHub Copilot studies show 40-55% increase in LOC output. Net productivity gain after code review is closer to 20-30% for experienced developers.

Lines of Code Per Developer Per Day Calculator

Estimate developer productivity in lines of code per day. Industry average: 10-50 LOC/day for production code. Adjust for language, domain complexity, and code review overhead.

AI & SaaS Tools

SaaS Metrics

AI Compute

AI ROI

LTV:CAC Ratio

ARPU ($/month)

Monthly Churn %

CAC ($)

Gross Margin %

LTV

$3500

LTV:CAC

11.67

Payback

2.9 mo

Health

Healthy ✓

Benchmark: LTV:CAC ≥ 3 is healthy. Payback under 12 months is excellent. Under 1 means you lose money on each customer.

How to Use

Enter the values for the scenario you are assessing. Estimate developer productivity in lines of code per day. Industry average: 10-50 LOC/day for production code. Adjust for language, domain complexity, and code review overhead. Use the loc per dev per day result to inform your calculation.

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Lines of Code Per Developer Per Day Calculator

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Frequently Asked Questions

How many lines of code does a developer write per day?

Is LOC a good productivity metric?

How do AI coding assistants affect LOC/day?