Measure Hex
Hexadecimal is base 16 and uses 0–9 plus A–F. Each digit contributes according to its position.
Formula: Decimal value = Σ(digit × 16^position)
Conversion factors are directional: multiply when the factor is stated as output per input, and divide when the relationship is stated the other way around.
A quick sanity check is to convert a round value such as 1, 10, or 100 and confirm that the magnitude moves in the expected direction.