The height of a hot air balloon can greatly vary based on its design, type, and size. Most traditional hot air balloons typically stand between 25 to 30 meters (82 to 98 ft) tall when fully inflated. However, some balloons, especially those of special shapes or larger sizes, can reach up to 42 meters (138 ft) in height. It's one of the reasons they make such an impressive sight when floating in the sky!