Live-converting calculator across four categories. Built with vibecoding in ~7 minutes.
Build a Unit Converter in React with: - Four categories: length, weight, temperature, volume - Linear conversion via factor-to-base-unit for length/weight/volume - Non-linear formula for temperature (C, F, K) - Live conversion as the user types - Swap button that flips from/to and copies result back to input - Tabbed category selector with icons - Graceful handling of non-numeric input - Dark theme with purple accents