Monkey D. Luffy's height has changed slightly over the course of the One Piece series:
- At age 7 (childhood), Luffy was about 91 cm (3 feet) tall
- At age 17 (pre-timeskip), he was approximately 172 cm (5 feet 8 inches) tall
- After the timeskip, at age 19, Luffy's height increased slightly to about 174 cm (5 feet 9 inches)
Therefore, Luffy is currently around 174 cm (5'9") tall in the series. This is his canonical height, not accounting for his rubber-like stretching abilities
