Height Calculator
Predict a child's adult height using the mid-parental height method.
The ±8.5 cm range covers approximately 95% of children. This estimate is based on the mid-parental height method and accounts for genetic potential only. Actual height is influenced by nutrition, overall health, and other environmental factors.
What is Height Calculator?
The Height Calculator estimates a child's potential adult height using the mid-parental height method, a widely used formula in pediatric medicine.
Developed by Tanner, Whitehouse, and colleagues, this approach averages the parents' heights with a gender-based adjustment to project a child's growth potential.
How does the Height Calculator work?
The +13 cm for boys and -13 cm for girls accounts for the average height difference between sexes.
The result includes a range of approximately +/-8.5 cm, covering about 95% of children who fall within that band of predicted height.
How to use the Height Calculator?
- Enter the father's height in centimeters in the first input field.
- Enter the mother's height in centimeters in the second input field.
- Select the child's gender (Boy or Girl) from the dropdown.
- View the predicted adult height and expected range on the right side.
Example
Try the calculator with your own numbers
- Enter your values in the input fields above.
- Adjust the values to match your situation.
- The result updates instantly as you change the inputs.
Benefits of using the Height Calculator
- Quick and non-invasive estimate based on a well-established pediatric formula.
- Provides a realistic range rather than a single number, setting appropriate expectations.
- Requires only parental heights — no special equipment or clinical visit needed.
Who should use the Height Calculator?
- People tracking their weight, fitness, and daily health numbers.
- Fitness enthusiasts planning workouts, calories, and protein intake.
- Parents monitoring their child's growth and development.
- Anyone preparing for a health check-up or fitness goal.
Tips for getting the most out of the Height Calculator
- Use your most recent measurements for the most accurate result.
- Re-check periodically as your weight, age, or activity level changes.
- Treat the result as a guideline, not a medical diagnosis — consult a professional for health decisions.
Frequently Asked Questions
How accurate is this prediction?
The mid-parental height method gives a target range within which about 95% of children will fall. Actual height depends on genetics, nutrition, health, and environmental factors.
Does nutrition affect the predicted height?
Yes. The formula is genetic-based only. Optimal nutrition, adequate sleep, and good health during childhood and adolescence all influence whether a child reaches their genetic potential.
At what age is this prediction most useful?
The method can be applied at any age, but it is most commonly used when monitoring growth during early childhood. As a child approaches puberty, bone age assessments provide more accurate predictions.
Small daily decisions add up. Use this calculator to track your numbers and make healthier choices with confidence.
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