When Do Boys' Voices Change?
Voice change usually starts between 12 and 14 in boys, and finishes over 12-24 months. It is a mid-to-late puberty marker, not an early one.
Typical timing
- First cracking or deepening: most often 12.5 to 14.
- Fully settled adult voice: 15 to 17 for most boys.
- Some boys start as early as 11, some as late as 15. Both can be normal.
Where voice change sits in the puberty timeline
In boys, the rough order is:
- Testicular enlargement (10-11)
- Early hair growth, some weight gain (11-12)
- Peak height velocity: the main growth spurt (13-15)
- Voice change begins, deeper over time (12.5-14 start)
- Broader shoulders, more muscle mass, adult facial features (14-17)
Voice change usually starts during or slightly after peak height velocity. If his voice is changing, most of the fastest growth has already happened or is happening right now.
How long the process takes
Voice change is not a switch. Cracking, unpredictability, and slow deepening are typical for 6-18 months. The larynx grows and the vocal cords lengthen and thicken during this period.
Signs it is starting
- Occasional cracking in the middle of a sentence.
- Voice sounding deeper first thing in the morning.
- Adam's apple becoming more visible.
- Coughing or throat clearing more often.
When timing is worth mentioning
- No voice change signs by age 15.
- No voice change plus no other puberty signs by age 14.
- Voice change starting before age 10.
Height data uses the CDC 2000 Growth Charts for boys. This page is parent education, not medical advice or diagnosis. If you have concerns about your son's growth, talk to his pediatrician, ideally with 6-12 months of measurements in hand. © 2026 The Growth Path.