Autodesk Inventor Tolerance Analysis is a CAD‑embedded 1D stack‑up analysis tool in Inventor that calculates cumulative effects of dimensional and GD&T tolerances to verify fit, function, and interchangeability before manufacturing. It supports worst‑case and statistical methods (e.g., Cpk, DPMO), bi‑directional associativity with model annotations, what‑if scenarios, and automated reporting to guide cost‑effective tolerance choices.