A standard Roku remote is approximately 5.5 inches (14 cm) long and 1.6 to 1.7 inches (about 4 to 4.3 cm) wide, with a height of around 0.78 to 0.8 inches (about 2 cm). Different models like the Roku Voice Remote and Roku Voice Remote Pro have slightly different sizes, with the Voice Remote Pro being a bit larger at about 5.7 inches long and 0.9 inches high due to extra features.
