What is the size of a dry erase marker?

A typical dry erase marker is usually around 5 to 6 inches in length and about 0.5 inches in diameter. The size can vary slightly depending on the brand and design, with some markers featuring larger or ergonomic grips. The ink reservoir inside can hold varying amounts of ink, but most standard markers are compact enough to fit comfortably in a hand for writing on whiteboards.