Find your ideal body weight range based on your height and gender using four widely-used medical formulas.
This tool estimates a healthy target weight range based on your height, sex, and sometimes frame size, using established medical formulas. It's meant as a general reference point rather than a strict target, since healthy weight varies by individual body composition and build.
This calculator commonly uses formulas like the Devine, Robinson, or Hamwi formula. For example, the Devine formula for men: 50 kg + 2.3 kg per inch over 5 feet. For women: 45.5 kg + 2.3 kg per inch over 5 feet. Different formulas give slightly different results.
Enter your height and sex, and the calculator returns an estimated ideal weight range based on one or more standard medical formulas.
Example: A man who is 5'10" (70 inches) tall would have an estimated ideal weight of 50 + (2.3 × 10) = 73 kg using the Devine formula.
Why do different formulas give different results? Each formula (Devine, Robinson, Hamwi, etc.) was developed using different population data and methodologies, so they produce somewhat different estimates — none is universally considered the single "correct" answer.
Does this calculator account for muscle mass? No, these formulas are based primarily on height and sex, so they don't account for individual differences in muscle mass, bone density, or body composition, which can mean athletic individuals fall outside the "ideal" range while still being healthy.
Should I aim exactly for the number this calculator gives me? No, treat it as a general reference range rather than a precise target — healthy weight varies meaningfully between individuals based on frame size, muscle mass, and overall health.
What is frame size and why does it matter? Frame size (small, medium, large) reflects bone structure, and some ideal weight calculations adjust the target range based on frame size, since a larger-framed person can healthily carry more weight than a smaller-framed person of the same height.
Is BMI a better measure than these formulas? BMI and ideal weight formulas are both general screening tools with similar limitations; neither replaces a comprehensive health assessment from a healthcare professional considering your individual circumstances.