Height percentile
A comparison of recorded height with the WHO 2007 reference for the same age and sex. It is not a grade.
Your Personal Growth Intelligence
Understand your growth. Know your potential.
Growth Predictor helps you understand recorded growth, height percentile, family height context and changes over time — in one simple experience.
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- Height percentile
- Growth trajectory
- Growth pace
- Family height context
What you can see
What Growth Predictor helps you understand
What a percentile means
Growth trajectory
The path formed by measurements you record over time, seen next to reference context.
Growth pace
Measured change between recorded heights. It describes what was recorded, not a forecast.
Family height context
Family height information you choose to add, used as context rather than a prediction.
Free
Growth Outlook
The free Growth Outlook brings the current picture together: recorded height, height percentile, family height context, measured growth pace, and a basic Growth Snapshot. It also includes 3 priorities.
These are ways to understand information you record. They are not a promise of future height. The height calculator on this site uses the same WHO reference for a single informational comparison.
Track your growth
Basic height tracking keeps the measurements you choose to record. A series of careful measurements is more informative than one reading, because measurement variation is normal.
How it works walks through adding information, recording height, and reviewing change. Premium adds Advanced Growth Tracking in the app.
Detailed Growth Analysis
Detailed Growth Analysis is a Premium view of trajectory, recorded changes, and growth context. It looks at what has been measured. It does not calculate centimeters left to grow or an exact future height.
The public growth charts show the WHO reference curves themselves, separate from anyone’s private measurements.
Priorities and the Full Personalized Plan
Free includes 3 priorities. Premium includes the Full Personalized Plan. Both are practical priorities based on the information you add.
They are habits and reminders, not treatment, supplements, or hormones, and not a guaranteed change in height.
Growth Check-ins
Growth Check-ins are a Premium reminder to measure again. Repeating a measurement in a consistent way can make recorded change easier to see.
A check-in is not a medical exam schedule. Concerns about growth belong with a qualified healthcare professional.
Monthly Growth Reports
Monthly Growth Reports are a Premium, month-by-month view of recorded growth. They summarize what was measured. They do not predict the next month.
Growth Snapshot
The Growth Snapshot is a simple card for the growth information you have recorded. The free app includes a basic Growth Snapshot you can share when you choose to.
Method
Science and methodology
Percentiles and z-scores are calculated reference metrics from WHO 2007 height-for-age data for ages 5–19. Recorded height stays separate from those calculations, and the 3 priorities stay separate from both.
Growth science explains the LMS method, why repeat measurements matter, and what Growth Predictor does not calculate.
Free and Premium
The free Growth Outlook is enough to understand the current picture. Premium adds deeper tracking and reports inside the mobile app. This website does not take payment.
Free
- Growth Outlook
- Height percentile
- Family height context
- Measured growth pace
- Basic height tracking
- 3 priorities
- Basic Growth Snapshot
Premium
- Detailed Growth Analysis
- Advanced Growth Tracking
- Growth Check-ins
- Monthly Growth Reports
- Full Personalized Plan
- Ad-free experience
For parents
A calm place to learn how consistent measuring, percentiles, and family height context fit together.
For teens
A straightforward explanation of current growth, recorded change, and healthy routines, without appearance pressure.
Questions people ask
What is Growth Predictor?
Growth Predictor is a native iOS and Android app that helps you understand recorded growth. It brings current height, height percentile, family height context, and measured growth pace into one experience.
How does height percentile work?
A height percentile compares a recorded height with the WHO 2007 height-for-age reference for the same age and sex. The 50th percentile is the median of that reference.
What growth reference does Growth Predictor use?
Growth Predictor uses WHO 2007 height-for-age reference data for ages 5–19 and the LMS method. For height-for-age, the Box-Cox power L is 1, so the z-score is (recorded height − reference median) ÷ (median × S). The published tables run from 61 through 228 months, separately for boys and girls.
Is Growth Predictor accurate?
The percentile is a calculated reference metric. It depends on the height, age, and sex that were recorded, and on the WHO 2007 tables. A careful measurement is more useful than a rushed one.
Blog
Growth, explained.
Short guides to percentiles, charts, measurement, and what a single height can and cannot tell you.
Measurement
How to Track a Child’s Height
Track a child’s height with the same method, the date, and enough time between readings. A series is more useful than one number.
September 29, 20265 min read
Growth Basics
Child Height Percentile by Age and Sex
A child height percentile compares one recorded height with the WHO height-for-age reference for the same age and sex. It is not a grade or a forecast.
September 28, 20265 min read
Growth Basics
How to Read a Child Growth Chart
How to read a child growth chart: what the WHO height curves mean, where a percentile sits, and why the pattern over time matters more than one point.
September 27, 20265 min read