As you go through puberty, the larynx gets bigger and the vocal cords lengthen and thicken, so your voice gets deeper. As your body adjusts to this changing equipment, your voice may "crack" or "break." But this process lasts only a few months.

Why does a man's voice crack?

Cavities in the sinuses, the nose, and the back of the throat grow bigger, creating more space in the face — which gives the voice more room to resonate. As a boy's body adjusts to this changing equipment, his voice may "crack" or "break." This process lasts only a few months.

When does a boy voice crack?

Boys experience voice change during puberty, and the change can happen anywhere between the ages of 10 and 15. Typically, voice change begins somewhere around age 12 or 13, or during the middle school years, which can make the experience a tad embarrassing for the child.