The Colligative Property Calculator allows users to compute vapor pressure lowering, boiling point elevation, freezing point depression, or osmotic pressure based on solute concentration, van’t Hoff factor, and other relevant parameters. Depending on the selected property, the calculator applies the corresponding formula: ΔP = i·X·P° for vapor pressure lowering, ΔTb = i·Kb·C for boiling point elevation, ΔTf = i·Kf·C for freezing point depression, and Π = i·C·R·T for osmotic pressure. Users input the values, and the calculator provides the result along with the substitution in a single step, making it useful for chemistry students and researchers studying colligative effects.