If you are asking when does voice change in boys, the short answer is: usually somewhere between about 11 and 15, most often around 13, and just after the big growth spurt. The squeaky, cracking part lasts a few months, the whole change can take anywhere from several months to a couple of years, and your voice keeps settling into its adult sound well into your twenties. Nobody can give you an exact date, and being earlier or later than your friends is normal.
In brief:
- Starts between 11 and 15, about 13 on average.
- The cracks come from a growing larynx and vocal cords.
- They usually last a few months.
- Speak slowly, breathe and don’t force your voice.
- See a doctor if hoarseness or throat pain doesn’t go away.
In this article · 7 min read
Your voice is made in the larynx (the voice box), at the top of your windpipe. Two stretchy muscles, the vocal cords, vibrate when air from your lungs passes between them. According to Nemours KidsHealth, puberty makes your body produce a lot of testosterone, your larynx grows bigger, and your vocal cords grow longer and thicker. Your facial bones grow too, and the spaces in your nose, sinuses and throat get bigger, so your voice has more room to echo (KidsHealth, reviewed 2021). Think of a guitar: a thin string sounds high, a thick string sounds low. Your voice is changing from the thin string to the thick one.
When does voice change in boys? A timeline
KidsHealth says a boy's voice usually starts to change somewhere between 11 and 15, although it can be earlier or later, and it depends on when you go through puberty (KidsHealth, 2021). A 2026 guide from Voice Science, which cites a long-term study by Hollien (2012), gives an average start of about 13.4 years, with a normal range from 10.5 up to 16.5 (Voice Science, March 2026). So in any group of 13-year-olds, some boys have not started, some are in the middle of it and some are nearly done. That is exactly what "normal" looks like.
Here is the whole journey in one table. The numbers are averages from the sources above, not rules:
| Stage | What you may notice | Roughly how long |
|---|---|---|
| Before | Your voice is still high, maybe a little deeper than last year | Until puberty starts, often between 11 and 15 |
| Starting | The voice feels harder to control; an Adam's apple may show | Often just after the growth spurt |
| Cracking | Sudden squeaks, drops and flips, not on every word | Usually a few months at most (KidsHealth) |
| Settling | Fewer cracks, a deeper voice that is easier to steer | The whole change averages about 18 months, and can take 3 years or more (Voice Science) |
| Maturing | The voice keeps developing | Most guys' voices are not fully mature until their twenties (KidsHealth) |
One more number, because it explains how big this is: Voice Science reports that once the change begins, the voice drops about one semitone a month, and the total drop is at least 8 to 12 semitones, close to a full octave or more. No wonder your voice needs time to learn the new instrument.
Why your voice cracks
Your vocal cords and the muscles around them are growing at different speeds. Voice Science explains that the growth is rapid but not always even, so your voice flips back and forth between the new, lower sound and the old, higher one, because neither has a steady anchor yet (Voice Science, 2026). KidsHealth puts it simply: the cracking is your body getting used to the changing size of your larynx, it is only temporary, and even during that time your voice will not crack every time you speak.
A few things can make a crack more likely. Wikipedia lists singing or talking at a pitch outside your natural range, stress, tiredness and emotional tension among the causes of a voice crack (Wikipedia, Voice change). That is why cracks often show up when you are nervous, for example when you answer in class or talk to someone you like.
What helps when your voice is cracking
You cannot speed it up, and there is nothing to take to skip this stage. But you can make it easier on yourself:
- Slow down. Speaking more slowly and breathing deeply helps you control the cracks. Short sentences and a pause for a breath give your voice time to find its note.
- Skip the throat-clearing. It feels like a fix, but it strains your vocal cords even more. Stop, breathe in, and carry on.
- Do not force it. Pushing out a low note with a tight throat is not a good idea. If you strain your voice a lot, you can end up with a rough voice and a sore throat.
- Drink water through the day and avoid shouting for long stretches, for example at a match. If you want to keep your throat healthy, never start smoking or vaping.
- Keep singing, but gently. Voice Science says guided singing in a comfortable range during voice change is both safe and helpful, and that dropping out of choir for a year is not needed. If you notice a gap between your high and low notes, work with the notes you have instead of forcing a jump. Ask your music teacher to adjust your part.
- Use humor. A crack is a two-second event. If you laugh first, the joke is over before it starts. Friends and brothers who have gone through it usually understand, as KidsHealth points out.
If someone teases you about your voice
Teasing about body changes is a form of harassment, and the problem is the person doing it, not your voice. You do not have to laugh along. Tell a parent, a teacher or another adult you trust, especially if it keeps happening. If you are the one who feels like making a joke about a friend's voice, remember that your turn is coming or has already come.
Where the book fits
100 Mysteries of Puberty for Boys by Magda Pabst is written straight to you, in a direct, funny tone. Its first chapter has a short mystery about the voice: it explains that the larynx grows and the vocal cords lengthen, and gives the same practical tip as above, to speak slowly and breathe deeply to control the cracks. The same chapter covers the phases of puberty (as rough guidelines, never a race), body hair, sweat, pimples and what to do about teasing, and it keeps repeating that you should not compare yourself with others. The rest of the book goes much further, with chapters on feelings, friends, school, the internet and your parents, and some parts are quite frank, so a parent may want to take a look first.
It is not a medical book and it does not diagnose anything. It also does not cover late or early puberty as a health topic, so for that your doctor is the right person.
When to talk to a doctor
A changing voice is normal, and most boys never need a doctor for it. Talk to a parent and a doctor if:
- you have a hoarse or rough voice, or a sore throat, that keeps coming back or does not go away;
- your voice hurts when you speak;
- you are worried because nothing about your body has started to change while your friends are well on their way;
- the sound of your voice really upsets you or stops you from speaking up at school.
A doctor can look at the whole picture and, if needed, send you to a specialist. If you are feeling low, you can find support services through the international directory findahelpline.com. You can also read our guide to a calm down corner at home for ideas to calm your body when you feel embarrassed, and the guide to a first period kit if you want to understand what your sister or a friend is going through at the same age. More guides are on the Books Go blog, and more books on the Books Go Publications home page.
Frequently asked questions
At what age does a boy's voice break?
Usually between 11 and 15, with an average of around 13 (KidsHealth, 2021; Voice Science, 2026). Some boys start earlier and some later, and that is normal.
How long does voice cracking last?
The cracking phase usually lasts a few months, and even then your voice will not crack every time. The whole deepening can take longer, from several months to a couple of years or more, depending on the boy.
Can I stop my voice from cracking?
No, and you do not need to. What you can do is slow down, breathe, avoid clearing your throat and not force low notes. These habits make cracks less frequent and less dramatic.
Is it normal if my voice has not changed yet and my friends' voices have?
Yes. The normal range for the start stretches from about 10.5 to 16.5 years (Voice Science, 2026). If you are worried, or nothing else about puberty has started, ask a doctor.
Will my voice get deeper after the cracking stops?
It can keep developing. KidsHealth says most guys' voices do not fully mature until their twenties, so it may settle a bit more over the years.
Can I sing while my voice is changing?
Usually yes, gently and in a range that feels comfortable. Voice Science says guided singing during voice change is safe and beneficial. Stop if your voice hurts, and tell your music teacher what is happening.
Sources
This article is for general information only and does not replace advice from a doctor, dietitian or other qualified professional.
