Ultimate Calculator

All-in-one calculator combining a full scientific calculator (6 modes), interactive graphing (5 modes), and universal unit conversions (15 categories) in a single tabbed interface.

This is a three-panel tool selected by Mode: a scientific/programmer/statistics calculator, an interactive function grapher, and a universal unit converter covering 14 categories including temperature, fuel economy, color codes, and number bases. Structurally, calculateUltimate is mostly a thin router rather than a full calculation engine: its own code comment states plainly that "the template handles engine calls directly," and for Mode 0 (Calculator) or Mode 1 (Graphing) — Calculator being the default — the function returns only { primaryMode, ready: true }, none of which are among the seven outputs declared in this config (Result, HEX, RGB, HSL, Binary, Decimal, Hexadecimal). Those seven only get populated when Mode is switched to 2 (Conversions), which delegates to a separate calculateUniversalConversions function, and even then only a subset appears depending on which of the 14 conversion categories is selected — Color Codes and Number Bases produce entirely different output keys than a plain unit conversion like Length or Weight does. Because the calculator's own default Mode is Calculator, not Conversions, none of the seven declared outputs actually exist in the engine's return value until a user explicitly switches modes and picks a category — which is also why this calculator carries no numeric claims: there is no stable default computation for a mechanical check to re-derive.