Konohamaru has short spiky dark brown hair, black (blue in Boruto) eyes, and a small chip in his tooth. In some of Konohamaru's appearances in the anime, he is depicted with blush marks on his cheeks. When he's first introduced he wears a grey helmet with a hole at the top for his hair to stick out of. He replaces this with Naruto's old goggles for the rest of Part I, replacing them with his own forehead protector in Part II. He has worn a blue scarf for most of his life. While the scarf was long and dragged behind him during his childhood, it became progressively shorter.

Konohamaru's Part I clothing consists of grey shorts and a yellow shirt with a red Konoha symbol printed on it. His Part II outfit is quite similar, with longer pants and a pale green jacket with a dark green stripe down the middle. During the Rinne Festival, his outfit consists of a grey/black zip-up jacket, dark grey pants, sandals, and bandages around both his arms. For Naruto and Hinata Hyuga's wedding, he wears a formal attire. As an adult, he is fairly tall with a narrower face and well-built in frame. He wears a small blue scarf with dark blue pants, black sandals and while on duty, he wears a flak jacket with a red armband on his left arm that has his clan's emblem on.