Body composition

Ideal Weight Calculator

Calculate your ideal weight using different validated scientific formulas.

Height (cm)

Biological sex

What is ideal weight?

Ideal weight is an estimate of the weight associated with good health for a given height and sex. It is a reference range rather than an exact target, and should be interpreted alongside body composition, muscle mass and other health indicators.

How is it calculated?

Three validated clinical formulas are used: Devine (1974), most widely used in clinical settings; Robinson (1983); and Miller (1983). All are based on height in inches above 5 feet. The calculator shows the average of the three as the primary result.

Formula

Devine (men): IBW = 50 + 2.3 × (height_in − 60) Devine (women): IBW = 45.5 + 2.3 × (height_in − 60)

⚠️ Limitations

These formulas do not account for body frame, muscle mass, ethnicity or age. A person with high muscle mass may exceed the range without excess fat. Use alongside BMI and body fat percentage.

FAQ

Is ideal weight the same as a healthy weight?

Ideal weight formulas provide a reference range. Healthy weight considers body composition, lifestyle and individual health markers beyond just a number.

Why do the three formulas give different results?

Each formula was derived from different population studies and methodologies. The average of all three provides a more balanced estimate.

What if I am significantly above or below my ideal weight?

Focus on gradual, sustainable changes. A rate of 0.5 kg/week is evidence-based and preserves muscle mass.

Are these formulas valid for all ages?

Devine, Robinson and Miller were developed primarily for adults aged 18–65. For older adults or children, consult a healthcare professional.