Height Calculators

How Ideal Height Weight is Calculated

The Devine formula is widely used in clinical practice. For men: IBW = 50 kg + 2.3 kg per inch over 5 feet. For women: IBW = 45.5 kg + 2.3 kg per inch over 5 feet. Frame size adjustments add or subtract 10% for large or small frames.

These formulas provide a baseline estimate. Actual ideal weight depends on muscle mass, age, ethnicity, and activity level. Always consult a healthcare provider for personalized guidance.

About the Mid-Parental Height Formula

This method averages the parents' heights and adjusts for the child's gender. For boys: (Father's height + Mother's height + 13 cm) ÷ 2. For girls: (Father's height + Mother's height − 13 cm) ÷ 2. The prediction has an accuracy range of ±10 cm (±4 inches).

Genetics accounts for roughly 60–80% of height variation. The remaining 20–40% is influenced by nutrition, health, sleep, and environmental factors during childhood and adolescence.

Understanding Height Percentiles

A height percentile tells you what percentage of the reference population is shorter than you. For example, the 75th percentile means you are taller than 75% of people in that group. Percentiles are calculated using a normal distribution based on large population surveys (NCD Risk Factor Collaboration, WHO, CDC).