Child Height Predictor

About the Child Height Predictor

"How tall will my child be?" is a question every parent wonders about. While genetics, nutrition and health all play a part, a surprisingly good estimate comes from a simple method based on the parents' heights.

This Child Height Predictor uses the mid-parental height method to estimate a child's likely adult height from the heights of both parents. It is a fun, ballpark guide — real height can vary either way.

How to use the Child Height Predictor

1. Enter the mother's height.
2. Enter the father's height.
3. Select the child's sex.
4. See the estimated adult height.

Key features of the Child Height Predictor

• Uses the mid-parental height method
• Estimates a child's adult height
• Based on both parents' heights
• A fun, easy prediction
• Private — calculated in your browser

How the Child Height Predictor works

This calculator applies standard, peer-reviewed formulas used by health professionals and public-health bodies worldwide. Depending on the metric, that includes the World Health Organization (WHO) classification, NHS and CDC guidance, the Mifflin-St Jeor equation for metabolic rate, and the U.S. Navy method for body composition. Inputs are converted between metric and imperial units using exact factors so results are consistent whichever system you use.

All calculations are performed in your browser, so the health information you enter is never sent anywhere.

Tips & best practices

• This is an estimate with a wide margin — a child's actual height can fall a good few centimetres either side.
• Nutrition, health and overall growth patterns influence final height beyond genetics alone.
• If you have concerns about your child's growth, your paediatrician can assess it properly using growth charts.

Standards & accuracy

Uses internationally recognised clinical formulas — WHO, NHS, CDC, the U.S. Navy method and Mifflin-St Jeor — for screening-grade estimates.

Important: these tools provide screening-grade estimates for general information and education only. They are not a medical diagnosis and do not replace professional advice. Always consult a qualified healthcare provider before making health decisions.

Who uses the Child Height Predictor?

• A ballpark estimate of a child's adult height
• Satisfying parental curiosity
• A talking point about growth
• General interest and education

Privacy & security

The Child Height Predictor runs entirely inside your web browser. Your data — whether that is a file, figures or text — is processed on your own device and is never uploaded to a server, stored or shared. There is no signup and no account, so you can use it as often as you like while keeping full control of your information. This makes it a safe choice even for confidential and sensitive work.

Why choose Toolinza?

• 100% free — no hidden charges, watermarks or usage caps.
• Private & secure — your data stays on your device.
• Standards-compliant — accurate results suitable for the UK, USA, Canada, Australia, EU, India, Pakistan, the Middle East and worldwide.
• Works everywhere — desktop, tablet and mobile.

Frequently asked questions