The SpaceX Starship spacecraft alone is about 52.1 meters (171 feet) tall and 9 meters (30 feet) in diameter. When combined with its booster, Super Heavy, the entire Starship system stands approximately 123 meters (403 feet) tall, making it the tallest rocket in the world. The fully stacked and fueled Starship and Super Heavy have a mass of about 5,300 metric tons. Starship is designed to be fully reusable and capable of carrying 100 to 150 metric tons of payload to low Earth orbit.