Isobaric vapor-liquid equilibria were measured at atmospheric pressure for the ternary system methanol + 1,3-dioxolane + water and its constituent binary systems methanol + 1,3-dioxolane and 1,3-dioxolane + water. Parameters for the Wilson and NRTL equations were determined from binary data, and the prediction for the ternary system was compared with experimental results. For this ternary system, the NRTL equation gave better results than the Wilson equation.