Height Calculator – Height Predictor

Written by Great Medico

Updated September 24, 2026 •2 min read

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Pediatric calculations reward careful attention to age, weight, and units. Height Calculator – Height Predictor uses only the child-specific fields shown in this tool to produce its estimate.

What this calculator does

Height Calculator – Height Predictor uses Mother height, Father height, Child sex, Child’s age, Child height, and Child weight to calculate Khamis–Roche predicted adult height. Where supported, it also shows Mid-parental estimate, Khamis–Roche typical error, and Mid-parental typical range so the primary result is easier to check. It follows the exact field flow and engine behavior in this plugin rather than describing a different calculator with the same name. Children are not simply small adults: age, weight, gestational history, formulation, and clinical setting can change how a result should be used. Pediatric outputs deserve extra attention to units and the population for which the method was developed.

How to use it

Enter or select Mother height, Father height, Child sex, Child’s age, Child height, and Child weight. Use the units offered by the calculator and keep paired laboratory or treatment values from the same clinical episode whenever the formula assumes that. If an entry is unknown, do not substitute a guess simply to obtain a number.

How the calculation works

The primary prediction uses age- and sex-specific Khamis–Roche regression coefficients with the child’s current height, weight, and mid-parent height; the implementation supports ages 4.0–17.5 in 0.5-year steps. It also shows a separate mid-parental-height estimate and typical error ranges.

Example

Using the sample values prefilled in this calculator, the primary result is 177.5 cm (Khamis–Roche predicted adult height), Mid-parental estimate is 175 cm, and Khamis–Roche typical error is ±2.1 in (≈5.3 cm). This example demonstrates the plugin’s own calculation path; replace the sample inputs with verified values before interpreting a real result.

How to interpret the result

Read the output as khamis–roche predicted adult height from this pediatric method. Age, weight, measurement quality, gestational history, and the child’s clinical state determine whether the number is useful or needs a different validated pathway.

Limitations and notes

Khamis–Roche is a statistical prediction for children in a defined age range and does not account for every ancestry, endocrine disorder, chronic disease, puberty pattern, or growth intervention. The result has several centimeters of expected error.