Spin-charge-orbit conversion is a fundamental phenomenon and active research area investigating the interconversion processes among spin, charge, and orbital angular momentum currents within condensed matter systems, particularly in materials exhibiting significant spin-orbit coupling or specific low-dimensional structures. This concept explores the mechanisms, efficiency, and material properties governing the mutual transformation of these distinct degrees of freedom, which is crucial for developing novel spintronic and orbitronic devices and advanced information processing paradigms.