In the manufacturing field, ensuring consistent product quality is paramount. Manufacturers strive to produce products that meet or exceed customer expectations while minimizing defects and variability. To achieve this, they rely on various tools and methodologies, with "Process Capability" emerging as a critical concept. Process capability is a statistical measure that evaluates the ability of a manufacturing process to consistently produce products within specified tolerances. This essay explores the significance of process capability in manufacturing, its key components, and its impact on quality and performance.