1. What is the Height Prediction Formula?

The height prediction formula estimates a child's adult height based on the parents' heights and the child's gender. It's a commonly used method that accounts for genetic influences on height.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• Father's Height — Biological father's height in centimeters
• Mother's Height — Biological mother's height in centimeters
• Offset — +13 cm for boys, -13 cm for girls

Explanation: The formula averages the parents' heights with a gender-specific adjustment that accounts for typical height differences between men and women.

3. Accuracy of Height Prediction

Details: This method predicts adult height within about 5 cm (2 inches) for 95% of children. Actual height can be influenced by nutrition, health conditions, and other genetic factors.

4. Using the Calculator

Tips: Enter both parents' heights in centimeters, select the child's gender. For most accurate results, use the parents' adult heights (not their current heights if elderly).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this prediction?
A: About 68% of children will be within 5 cm (2 inches) of the predicted height, and 95% within 10 cm (4 inches).

Q2: Can this predict height for adopted children?
A: No, this method requires knowledge of biological parents' heights.

Q3: What if parents are unusually tall or short?
A: The prediction may be less accurate for children of parents at extreme height percentiles.

Q4: Does this work for all ethnic groups?
A: The formula works reasonably well across populations, but may be less accurate for populations with different average height differences between genders.

Q5: Can nutrition affect the actual height?
A: Yes, poor nutrition or chronic illness during growth years may result in height below genetic potential.