a system for estimating a vehicle battery charging time using big data is provided. The system may include a big-data server configured to collect a charge-related parameter of a battery in a vehicle from a plurality of vehicles, to group the plurality of vehicles into a plurality of groups based on the collected charge-related parameter, and to calculate and transmit a first estimated charging time of a group to which the vehicle belongs during vehicle charging, and a controller installed in each of the plurality of vehicles, and configured to calculate a second estimated charging time based on a state of the battery in the vehicle while the corresponding battery in the vehicle is charged and to calculate a final estimated charging time of the battery by combining the first estimated charging time and the second estimated charging time.