A system, method, and apparatus for certifying an end-of-train device pressure calibration is provided. The system includes an end-of-train device including a brake pipe interface adapted to be removably connected to a brake pipe system of a train and to receive air having a pressure from the brake pipe system, and a pressure sensing device configured to measure the air pressure received in the brake pipe interface to obtain a measured pressure. The system also includes a pressure calibration device adapted to be removably connected to the brake pipe interface when the end-of-train device is removed from the train, the pressure calibration device configured to output air at a regulated pressure to the brake pipe interface, and at least one controller programmed or configured to determine a calibration certification result based at least partially on a difference between the measured pressure and the regulated pressure.