The CalcCraft plugin transforms tables in Obsidian into functional spreadsheets, enabling dynamic calculations and formula evaluations directly within notes. Users can leverage spreadsheet-like references and math operations to compute values in live-preview or read modes while editing remains visible in source mode. The plugin supports a broad range of functions, including summation, conditional formatting, matrix operations, and unit conversions, powered by Math.js. Interactive features like cell dependency highlighting help track data flow, enhancing clarity for complex calculations. This tool is ideal for users who need advanced mathematical or tabular data manipulations within their vaults.