Conversion methodology

Reference-unit model

Each proportional unit is normalized through a stable reference unit within its category. A value is converted to the reference unit, then into the destination unit. This makes reverse conversions consistent and reduces duplicated factors.

Exact and conventional values

Exact definitions are stored without unnecessary rounding. Display precision affects presentation only, not the calculation itself.

Temperature

Temperature scales include offsets as well as ratios. We therefore convert through kelvin using scale-specific formulas rather than a single multiplication factor.

Review process

Conversion formulas are reviewed and maintained regularly. Changes are checked against primary measurement references before publication.