Free Tool

Ideal Body Weight Calculator

Estimate your ideal body weight using four established clinical formulas. No sign-up required.

How It Works

This calculator uses four widely-referenced ideal body weight formulas. Each was developed in a clinical context and estimates a healthy weight based on height and sex. Results are shown in kilograms and pounds. The value height_in represents your total height in inches.

Devine (1974)

Male = 50 + 2.3 × (height_in − 60)

Female = 45.5 + 2.3 × (height_in − 60)

Robinson (1983)

Male = 52 + 1.9 × (height_in − 60)

Female = 49 + 1.7 × (height_in − 60)

Miller (1983)

Male = 56.2 + 1.41 × (height_in − 60)

Female = 53.1 + 1.36 × (height_in − 60)

Hamwi (1964)

Male = 48 + 2.7 × (height_in − 60)

Female = 45.5 + 2.2 × (height_in − 60)

Important Limitations

These formulas were originally designed for people over 5 feet (152 cm) tall and may not produce meaningful results below that height. They do not account for age, body composition, muscle mass, bone density, or ethnicity. Ideal body weight is a rough clinical estimate — not a personal target. For personalised guidance, consult a qualified health professional.

Want personalised coaching?

Get matched with a coach who can build a programme around your goals, not just a number.

Get started for free

Not medical advice. Consult a healthcare professional before starting any exercise or diet programme.