How to Calculate Bug Rate

What is Bug Rate?

A bug rate (defect density) calculator measures software quality by computing the number of defects per thousand lines of code (KLOC) or per feature. Industry averages range from 1–50 bugs per KLOC depending on domain; safety-critical systems like aviation software target <0.001 defects per KLOC.

Step-by-Step Guide

1Track total operational time
2Subtract downtime minutes
3Calculate availability percentage

Worked Examples

Input

720 hours in month, 1 hour downtime

Result

99.86% uptime

Typical SLA target

Common Mistakes to Avoid

✕Wrong parameters
✕Missing adjustments

Frequently Asked Questions

What does this calculator do?

Set parameters

How do I use this calculator?

Run calculation

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