Height Predictor Calculator
### Pediatric Endocrinology & The Tanner Mid-Parental Formula Genetics account for approximately $80\%$ of adult height variation. Pediatricians utilize the **Tanner Mid-Parental Method** to.
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📐 Formula
💡 Practical Example
A mother who is 5'4" (162.6 cm) and a father who is 5'10" (177.8 cm) calculate their daughter's adult height potential as 5'6.0" (167.6 cm) with a target range of 5'3.9" to 5'8.1".
📖 About Height Predictor Calculator
Pediatric Endocrinology & The Tanner Mid-Parental Formula
Genetics account for approximately 80\% of adult height variation. Pediatricians utilize the Tanner Mid-Parental Method to establish a child's genetic target height:
- Tanner Formula for Boys:
Target Height (in) = Father's Height (in) + Mother's Height (in) + 5.02
Target Height (cm) = Father's (cm) + Mother's (cm) + 13.02
- Tanner Formula for Girls:
Target Height (in) = Father's Height (in) - 5.0 + Mother's Height (in)2
Target Height (cm) = Father's (cm) - 13.0 + Mother's (cm)2
- Target Confidence Interval: Human polygenic inheritance yields a natural Gaussian distribution of ± 2.0 to 2.1 inches (± 5.0 to 5.3 cm) around the mid-parental mean.
How to Use This Calculator
Enter your Unit System — select from Imperial (feet & inches / lbs), Metric (cm / kg), Child's Biological Sex — select from Boy (Male), Girl (Female), Mother's Height (Total Inches or cm) (e.g. 64 for 5'4" or 162.6 cm), Father's Height (Total Inches or cm) (e.g. 70 for 5'10" or 177.8 cm), Height Prediction Method — select from Tanner Mid-Parental Formula (Standard Genetic Potential), Age 2 Doubling Rule (2 × Height at Age 2), and Parental Benchmark Profile — select from Custom Parental Heights, Boy / Average Parents (Mom 5'4" / Dad 5'10" → Son 5'11.5"), Girl / Average Parents (Mom 5'4" / Dad 5'10" → Daughter 5'6.0"). Results update instantly — no submit button needed. Use metric or imperial units as labeled. For the most accurate result, measure height and weight in the morning without shoes.
The Formula
Conversion factors (to SI base unit or reference unit):
momIn: 64.0
dadIn: 70.0
Worked Example
A mother who is 5'4" (162.6 cm) and a father who is 5'10" (177.8 cm) calculate their daughter's adult height potential as 5'6.0" (167.6 cm) with a target range of 5'3.9" to 5'8.1".
Understanding Your Result
Health calculations based on standard clinical formulas give a population-reference estimate — individual variation exists. Compare your result to the reference ranges provided using validated sources (WHO, CDC, NIH, or specialty clinical guidelines). A single measurement is a starting point; meaningful health trends emerge from tracking the same metric over time under consistent conditions. For values outside reference ranges, consult a qualified healthcare provider before making changes to diet, exercise, or medication.
💡 Expert Health Guidance & Clinical Context
- This calculator uses clinically validated formulas and population reference data published by the WHO and NIH. Results are screening estimates, not medical diagnoses.
- Consult a licensed healthcare provider before making any changes to diet, medication, or exercise based on these results — individual variation is significant.
- Genetics, chronic conditions, and concurrent medications can dramatically affect what a "normal" result means for a specific individual.
- Track your results over time: a single data point is less meaningful than a trend measured consistently across multiple weeks or months.
- The CDC recommends adults receive routine health screenings at least annually. Use these calculations to prepare informed questions for your physician.
- Body composition, lifestyle factors, and stress levels all interact with the metrics shown here. No single number captures your full health picture.
- For pediatric or geriatric populations, reference ranges may differ significantly from the adult standards used in general calculators.
- Always cross-reference results with laboratory tests, clinical examinations, and professional medical evaluation before acting on any finding.
Results are for informational and educational purposes only. Always verify critical decisions with a qualified professional.