Electrostatically confined quantum dots in bilayer graphene have shown potential as building blocks for quantum technologies. To operate the dots, e.g., as qubits, a precise understanding and control of the confined states and their properties is required. Herein, a large-scale numerical characterization of confined quantum states in bilayer graphene dots is performed over an extensive range of gate-tunable parameters such as the dot size, depth, shape, and the bilayer graphene gap. The dot states' orbital degeneracy, wave function distribution, and valley g-factor are established and the parametric dependencies to achieve different regimes are provided. It is found that the dot states are highly susceptible to gate-dependent confinement and material parameters, enabling efficient tuning of confined states and valley g-factor modulation by quantum dot design. Electrostatically confined quantum dots in bilayer graphene have shown potential as building blocks for quantum technologies. The authors perform large-scale numerical characterization of confined quantum states in bilayer graphene dots over an extensive parameter range. The dot states are highly susceptible to gate-dependent confinement and material parameters, enabling tuning of confined states and valley g-factor modulation by quantum dot design.image (c) 2023 WILEY-VCH GmbH