km mi

Computes the Maintainability Index per file using the Visual Studio formula. MI is normalized to a 0–100 scale with no comment-weight term.

km mi [path]

Formula

MI = MAX(0, (171 - 5.2 * ln(V) - 0.23 * G - 16.2 * ln(LOC)) * 100 / 171)

Where V = Halstead Volume, G = cyclomatic complexity, LOC = code lines.

Thresholds

MI Score	Level	Meaning
20–100	green	Good maintainability
10–19	yellow	Moderate maintainability
0–9	red	Low maintainability

Options:

Flag	Description
--format {table,json,short,terse}	Output format (default: table)
--include-tests	Include test files in analysis (excluded by default)
--top N	Show only the top N files (default: 20)
--sort-by METRIC	Sort by mi (ascending), volume, complexity, or loc (default: mi)

Example output:

Maintainability Index (Visual Studio)
──────────────────────────────────────────────────────────────────────
 File                       Volume Cyclo   LOC     MI  Level
──────────────────────────────────────────────────────────────────────
 src/loc/counter.rs        32101.6   115   731    0.0  red
 src/main.rs               11189.6    16   241   17.5  yellow
 src/loc/report.rs          6257.0    13   185   22.2  green
──────────────────────────────────────────────────────────────────────
 Total (3 files)                         1157   13.2