Child Height Predictor
Predict adult height from parent heights using the mid-parental method.
Predicted Adult Height
5′10″
176.5 cm
Low Estimate
5′6″
High Estimate
6′1″
Height Details
| Predicted Height | 5′10″ (176.5 cm) |
| Likely Range | 5′6″ – 6′1″ |
| Range in cm | 167.9 cm – 185.2 cm |
| Mother's Height | 5′4″ |
| Father's Height | 5′10″ |
Uses the mid-parental height method (±3.4 inches). This predicts within 2 inches for about 50% of children. Genetics, nutrition, health, and other factors significantly affect final adult height. This is an estimate, not a diagnosis.
Use the Child Height Predictor above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
How It Works
Our Child Height Predictor uses the widely accepted mid-parental method to estimate your child's adult height. This tool provides a fascinating glimpse into your child's potential growth trajectory, offering insights that can be useful for planning and understanding their development. While not a definitive prediction, it offers a statistically relevant estimation based on genetic inheritance, a key factor in human growth, especially in 2026 where genetic research continues to advance rapidly.
The mid-parental method calculates the average of the biological mother's and father's heights, then adjusts for the child's sex. For boys, we add 2.5 inches (6.35 cm) to the average, and for girls, we subtract 2.5 inches (6.35 cm). This formula accounts for the general height differences between adult males and females, providing a personalized estimate based on established growth patterns observed in populations globally.
Remember that this prediction is an estimate, not a guarantee, as many factors beyond genetics influence height, such as nutrition, health, and environmental conditions. Avoid common mistakes like inputting non-biological parent heights or ignoring significant growth-stunting medical conditions. For the most accurate results, use the biological parents' heights and understand that a typical height range of +/- 4 inches (10 cm) from the predicted value is common.
Example: Predicting Sarah's Adult Height
- 1 Step 1: Input Parent Heights. Let's say Sarah's biological mother is 5'4" (162.5 cm) and her biological father is 5'10" (177.8 cm).
- 2 Step 2: Calculate Mid-Parental Height. The average height is (162.5 cm + 177.8 cm) / 2 = 170.15 cm. Since Sarah is a girl, we subtract 6.35 cm.
- 3 Step 3: Determine Predicted Adult Height. Sarah's predicted adult height is 170.15 cm - 6.35 cm = 163.8 cm (approximately 5'4.5").
- 4 Step 4: Understand the Context. This means Sarah is most likely to be around 5'4.5" tall as an adult, with a typical range between 5'0.5" and 5'8.5". This prediction helps parents visualize her potential growth and provides a general benchmark for her development.
Source: CDC · Last updated: April 2026
Frequently Asked Questions
How accurate is the mid-parental height prediction?
How do you predict a child height from parent heights?
At what age do children stop growing?
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