Ideal Weight Calculator by Height
Enter your height and gender to get your ideal weight by three classic formulas plus the healthy BMI range.
Normal body-mass-index range for your height
Estimation formulas: they ignore body frame and muscle mass. Not medical advice.
How ideal weight is calculated
Ideal weight is a reference range that clinicians estimate from height and gender. The most reliable guide is the body mass index: 18.5–24.9 is considered healthy, and the calculator converts that into kilograms for your height.
The classic formulas give point estimates: Devine (used in medicine for drug dosing), Robinson (a 1983 refinement) and Broca (the simple height-minus-100/110 rule). Some spread between them is normal.
Body frame, muscle mass and age strongly affect a healthy weight. Treat the formulas as a starting point, not a diagnosis — see a doctor for personal advice.
FAQ
What is the ideal weight for 170 cm?
The healthy BMI range for 170 cm is roughly 53.5–72 kg. Broca gives 70 kg for men and 60 kg for women; Devine about 66 kg for men.
Which formula is the most accurate?
None is definitive: clinicians rely on the BMI range, with Devine and Robinson as quick estimates. Look at the range, not a single number.
Does age matter?
The classic formulas ignore age. Acceptable weight rises slightly with age; for precise assessment you need body-composition measurements.