Height Prediction Calculator – Predict Adult Height | 5iTech

📏 Free Height Prediction Calculator

Child Height Prediction Calculator

Estimate potential adult height using current age, height, weight and parental heights. Compare the Khamis-Roche estimate with the mid-parental target.

✓ Khamis-Roche method

🎯Child Height Predictor

For children approximately 4–17.5 years old. Results are estimates, not medical diagnoses.

Child’s Sex

Measurement Unit

Child’s Age

years

Enter age from 4.0 to 17.5 years.

Current Height

Current Weight

Father’s Height

Mother’s Height

📊Prediction Result

Estimate

Predicted Adult Height

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LowerPredictedUpper

Lower—

Predicted—

Upper—

Mid-Parental Target—

Current Height—

Calculation summary

Enter the child information.

Khamis-Roche regression.

🔒 PrivateCalculations run in your browser.

📏 Two MethodsCompare individualized and parental estimates.

🌍 Metric + ImperialSwitch units without losing your inputs.

✓ Mid-parental method

👨‍👩‍👧Parents-Only Height Calculator

Estimate the child’s target adult height when current age, height or weight is unavailable.

Child’s Sex

Measurement Unit

Father’s Height

Mother’s Height

📐Target Height

Estimate

Mid-Parental Target Height

—

Lower—

Target—

Upper—

Formula

—

📐Height Converter

Convert centimeters to feet/inches or enter feet/inches to convert back to centimeters.

Centimeters

Feet

Inches

Equivalent Height

5 ft 8.9 in

175.0 cm

How Does the Height Prediction Calculator Work?

The 5iTech calculator provides two complementary estimates. The Khamis-Roche method uses age, sex, current height, current weight and mid-parental height. The parents-only method estimates a target adult height from the heights of both parents.

🎯 Khamis-Roche Method

The published method predicts adult stature without skeletal age using age- and sex-specific regression coefficients for current height, current weight and mid-parental height.

Predicted adult height = B₀ + b₁ × child height + b₂ × child weight + b₃ × mid-parent height

👨‍👩‍👧 Mid-Parental Height

A simple target-height estimate based on both parents’ heights.

Boy: (Father + Mother + 13 cm) ÷ 2

Girl: (Father + Mother − 13 cm) ÷ 2

How Tall Will My Child Be?

No calculator can guarantee an exact final adult height. Genetics, growth pattern, health, nutrition, hormones and puberty timing can all affect the result.

Height Prediction From Parents

Parents’ heights are an important indicator of genetic height potential. The mid-parental method provides a central target rather than a guaranteed final height.

How Accurate Is the Khamis-Roche Method?

The original Khamis-Roche study was developed from healthy white American children in the Fels Longitudinal Study and the authors explicitly note that applicability is limited to that population and to children without pathological conditions affecting growth. The published method is therefore best presented as a statistical estimate, not a universal clinical prediction. citeturn199625search0

Factors That Can Affect Adult Height

Genetic inheritance
Nutrition and general health
Puberty timing
Hormonal and endocrine function
Chronic medical conditions
Normal individual variation in growth

Frequently Asked Questions

What is a height prediction calculator?

It is a tool that estimates potential adult height from current child measurements and/or parental heights. The result is an estimate, not a guarantee.

What age can I use for the Khamis-Roche calculator?

This implementation accepts ages from 4.0 to 17.5 years and interpolates between the published half-year coefficient rows.

Can I calculate adult height using only my parents’ heights?

Yes. Use the Parents Only tab for the mid-parental target-height calculation.

How tall will my child be as an adult?

The calculator gives a statistical estimate. Actual adult height can differ from the prediction.

Does the calculator store my child’s information?

The calculations are performed in the browser and no account is required.

Is this height calculator medical advice?

No. It is an educational calculator. Growth concerns should be discussed with a qualified healthcare professional.

Important: This tool is for educational and informational purposes. The Khamis-Roche model has population-specific limitations and is not a diagnosis or a substitute for professional medical assessment.