Hatsune Miku is canonically 16 years old as part of her fictional character background. This age has remained constant since her introduction in 2007 by Crypton Future Media as a virtual singer and Vocaloid software

. Although the software and character were launched in 2007, making the software itself 16 years old as of 2023, Miku's character is always depicted as a 16-year-old girl and does not age in the fictional sense

. In summary:

• Fictional age: 16 years old (fixed)
• Software/character introduction: 2007
• Real-world age of the software: 16 years as of 2023

Thus, while the software and franchise have aged since 2007, Hatsune Miku herself remains eternally 16 in her fictional portrayal