Ideal Weight Calculator - Find Your Healthy Weight Range

No single formula is universally best. The Devine formula is widely used in clinical settings for drug dosing. The Hamwi formula is popular in nutrition. Robinson and Miller formulas are considered alternatives. Comparing all four gives a practical weight range rather than a single rigid target. The BMI-based range (18.5–24.9) is often considered most reliable for general health.

Most IBW formulas are based primarily on height and gender, not age. However, body composition naturally changes with age — older adults tend to have more body fat and less muscle at the same weight. Some guidelines suggest slightly higher acceptable weight ranges for older adults (over 65). Always consider individual health factors beyond weight alone.

Ideal weight and healthy weight are related but not identical. Ideal weight formulas give a specific target number, while healthy weight covers a BMI range of 18.5–24.9. Healthy weight is a broader concept that accounts for body fat distribution, muscle mass, and overall metabolic health, making it a more practical goal for most people.