{
    "title": "Unit Conversion Error Prevention Matrix",
    "updated": "2026-08-06",
    "methodology": "The matrix categorizes common conversion failures and pairs each with a prevention or verification method.",
    "limitations": "It does not validate specialized scientific constants, calibration, measurement uncertainty, or jurisdiction-specific definitions.",
    "columns": [
        "Error pattern",
        "Example",
        "Prevention"
    ],
    "rows": [
        [
            "Missing unit",
            "Result shows 12 only",
            "Display value and unit"
        ],
        [
            "Wrong direction",
            "Multiply instead of divide",
            "Write source and target relation"
        ],
        [
            "Area scaling",
            "1 ft² treated like 12 in²",
            "Square the linear factor"
        ],
        [
            "Volume scaling",
            "1 ft³ treated like 12 in³",
            "Cube the linear factor"
        ],
        [
            "Temperature offset",
            "Use pure ratio for °C/°F",
            "Apply offset formula"
        ],
        [
            "Mass vs force",
            "kg and newton confused",
            "Name the physical quantity"
        ],
        [
            "US vs imperial gallon",
            "Same word, different volume",
            "Label system"
        ],
        [
            "Decimal separator",
            "1,5 parsed as 15",
            "Validate locale input"
        ],
        [
            "Premature rounding",
            "Round intermediate steps",
            "Round final result"
        ],
        [
            "Significant figures",
            "Output suggests false precision",
            "Match input quality"
        ],
        [
            "Binary vs decimal bytes",
            "MB and MiB mixed",
            "Label base"
        ],
        [
            "Time period",
            "Monthly and annual values mixed",
            "Normalize period"
        ],
        [
            "Currency date",
            "Rate has no timestamp",
            "Record source and time"
        ],
        [
            "Compound units",
            "mph to m/s factor omitted",
            "Convert numerator and denominator"
        ],
        [
            "Copy error",
            "Unit dropped during export",
            "Include unit in copied text"
        ]
    ]
}