This is an experimental program attempting to determine your stage of development. The results will only be as accurate as the answers which you give. Do not expect this to substitute for the accurate answers a doctor could give you concerning your development. This tool makes no record of the information given unless you choose to submit a correction at the end.

In some sections there might be multiple answers which describe you. If that is the case, select the one furthest down the list that still describes you.

Your Age: Under 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 or over

Growth:

I am steadily growing, but my height hasn't increased rapidly yet.

I am increasing in height faster than before.

I went through a growth spurt, but it seems to have slowed down.

I went through a growth spurt, but I haven't seen a change in height in over a year.

I'm not certain



Calculate your recent growth rate: On / / (Day / Month / Year) I was feet inches tall. Then on / / (Day / Month / Year) I became feet inches tall. Rate of Growth: inches per year.



About how much have you grown in the last year? About an inch (1-3 cm).

About one to two inches (3 to 5 cm).

About two to eight inches (5 to 20 cm) or even more.

I haven't grown in the last year.

I'm not certain





When people look at me, I appear more like other children in shape (first from left)

My feet and hands look large for my size body (second from left)

My legs look long for my sized body (third from left)

My body proportions are almost like an adult, but I'm more narrow in the shoulders than an adult (fourth from left)

When people look at me, they see someone with an adult shape (fifth from left)

Measure how tall you are. Next, using 1/2 of your height, where on your body is the half-way point? Near my navel (belly button)

Above the base of my penis

Near or at the base of my penis

Below the base of my penis



I have more body fat now than I had most of my childhood

I had more body fat for a while, but I have slimmed down again

I haven't noticed much change, I have basically the same amount of body fat most of my life.

Voice:

My voice is the same as it has been since childhood

My voice box (Adam's apple) is getting noticeable

My voice breaks or squeaks at awkward times

My voice is distinctly deeper, though it still breaks at odd times

My voice is consistently deeper than it was in childhood.



Body Hair:

These questions assume that you do not shave your body hair. If you have, answer as what you would have if you did not shave.

I'm of a lineage who have little body and facial hair.

I don't have any hair on my legs or arms

I see very fine hairs on my legs and arms, which are easily overlooked

I have noticeable hair on my legs and arms

I have hair on my upper lip

I need to shave more than once a week or so

I have at least some facial hair on my cheeks

I have hair growing on my chest



There is no hair under my arms

I see some fine hairs growing in my armpits.

I have some hair under my arms, but it is not thick.

I have a typical amount of underarm hair for adults of my lineage.



The following questions assume you are not shaving your pubic hair. Looking at your groin, notice the two diagonal folds at the top of your thighs. The area between the two folds is your groin. There is no hair around my genitals



There are fine hairs growing near the base of my penis



There are hairs growing across my groin, but it looks thin, the color is lighter than the hair on top of my head, and the hairs tend to be straight. The hair doesn't quite reach to the edges of my groin.



There are hairs growing across my entire groin, from fold to fold, that are thick and curly.



There is a strip of hair, which is easy to see, growing upwards from my genitals to my navel (belly button).

There are hairs growing across my entire groin that are thick and curly. The pubic hairs, which are not fine, go beyond the folds at the top of my thighs and spreads across my inside thighs, underneath my scrotum.



Chest:

I have nipples on my chest that are pale and soft like every other child.



A darker ring is forming around my nipples. The nipples are soft.



One or both of my breasts look swollen and stick out a bit.



There is a distinct ring around my nipples. The nipples are firm and stick out a bit.



My chest has increased in size and you can feel hard muscles under the skin.



Face:

My face is the same as it has always been in childhood.

I can see fine hairs on my chin and under my nose.

There are some long hairs on my face, but just a few.

The hair on the side of my face, near my ears is getting distinct

I have to shave or remove hair from my face every once in a while.

If I try growing a beard, it looks scraggly.

I could grow decent sideburns, mustache and perhaps a goatee, but definitely not a full beard

I have to shave or remove hair from my face regularly.

If I wanted to, I could grow a full beard.



The shape of my face looks the same as my childhood pictures

My chin is more square in shape and is more pronounced

My face is the same as in childhood.

I'm starting to get a few pimples.

I getting a lot more pimples than when I was younger.

My acne is still there, but it seems to be fading.

I only get a few break outs now and again, though it was worse when I was younger.

I still have some of my childhood teeth.

All my childhood teeth have been replaced by adult teeth (28 teeth).

My four wisdom teeth (third molars) have come in (32 teeth).

Genitals:

My scrotum is small and wrinkly like other children.

My scrotum looks swollen compared to a child's, but it doesn't hang down.

One testicle is distinctly lower than the other.

My scrotum distinctly hangs down when I am warm.



Some of the images below can be clicked on to get a more detailed view. The question is in regards to the gentials and not the pubic hair. Several variations are shown at each stage to give you an idea of the range of possibilities. My penis is small like a child's.



I get erections frequently, not just at night but during the day as well.



My penis has gotten longer when I'm erect in the last year or two.



The head of my penis (the glans) has gotten darker (redder) in color.

My penis has gotten wider when I'm erect in the last year or two.



The head of my penis (the glans) has a rougher texture.

The head of my penis (the glans) flares out at the base of the glans.

My penis has stopped getting longer and wider. It looks more like an adult's penis.





Looking at the chart on the right and using a ruler to make sure the scale is approximately correct, my testicles are about: 1 to 3 ml

4 to 6 ml

7 to 10 ml

11 to 16 ml

17 to 27 ml



I haven't had an ejaculation.

When I get sexually aroused, my penis sometimes drips a clear fluid, but I haven't had an ejaculation.

I have ejaculated semen, but I don't drip clear fluid when I am sexually aroused.

I have ejaculated semen, and when I get sexually aroused a clear fluid drips from my penis.

Estimated Tanner Stage:

What does the number mean?

Dr. Tanner divided development into five stages:

Stage 1: Is childhood. It lasts from birth until puberty. Stage 2: Begins from the first external signs of puberty to your growth spurt. Stage 3: This is the period when you grow the most quickly. Stage 4: Starts when the rapid growth slows down and ends when you stop growing in height. Stage 5: Is full physical maturity. There is still some development going on, but the growth in height has stopped and your body has reached its adult shape.

Details of each stage can be found below. The calculator uses the physical characteristics you report to make the same assessment a doctor would make in determining how far you have developed. Thus, a "2.1" would mean that you just started showing signs of entering adolescence, a "3.5" would mean you are right in the middle of your growth spurt, while a "4.8" would mean that you are just about done physically developing. The scale on the calculator goes from 1.0 to 5.5. It goes above 5.0 to represent the additional development that takes place even after growth in height stops.

Are you curious as to what each stage of development brings? The following pages give a description about the changes which happen in each Tanner stage.

Want to Help Improve the Calculator?

If you think the estimate was off and you would like to help improve the calculator, take a look at the description and images of the five stages and decide which one more closely fits you. Then make sure the form above is filled out (so I can have a record of your answers to consider) then fill in the following:

Which stage do you think you are in? What leads you to that conclusion? Which questions were hard to answer?

Correction to Results:

This will create an email to send. If your computer is not set up to send email from a web page, it won't work. You can still email me at the address listed below, but you will have to type up your own comments and information.