Taller Ninja
How tall will you be?
An honest answer.
No login, no email, no tricks. We never see or store your numbers.
Come back on your 13th birthday 🎂
Taller Ninja — and this calculator — is for ages 13 and up. Your range will keep until then. That one we can promise.
That is a range, not a promise. Nobody can promise you a number.
Average of your parents' heights, adjusted for boys or girls — the mid-parental method paediatricians use. It is wide on purpose: half of everyone lands below the middle. That is what a middle is.
You measured taller than the top of your estimate already. A range is an estimate — you are the real measurement. Keep doing what you're doing.
Genetics set your range. Sleep, food and movement decide whether you reach the top of it.
That second half is what Taller Ninja trains: a 15-minute daily routine for posture, movement, food and sleep. Streaks, belts from white to black, zero miracle claims — and the same honest estimate you just got.
The fine print, in plain words
- This calculator runs entirely in your browser. We never see or store your numbers — the only thing that ever leaves this page is a share card, and only if you send one yourself.
- No account, no email, no cookies.
- Always a range, never a promise — and never a "gain X cm" claim. Those are marketing.
- Not medical advice. Worried about your growth? Talk to a doctor.