Ideal Weight Calculator
Find your target weight using multiple scientific formulas.
What is an ideal weight calculator and how do these formulas work?
Ideal body weight formulas estimate a healthy target weight based on your height and gender. This calculator offers four widely recognized medical formulas: Robinson (1983), Miller (1983), Devine (1974), and Hamwi (1964). Each uses a base weight plus an increment for every centimeter (or inch) above a reference height. Results are used in clinical settings for medication dosing, nutrition planning, and general health assessment.
How to use the Ideal Weight Calculator
Select your gender, enter your height in centimeters, and choose a formula from the dropdown. Click "Calculate" to see your ideal body weight. You can switch between formulas to compare results — each formula gives slightly different values based on its underlying assumptions.
Example calculations
For a 170 cm male, the Devine formula gives 70.0 kg, the Miller formula gives 68.6 kg, the Hamwi formula gives 68.0 kg, and the Robinson formula gives 66.5 kg. For a 170 cm female, the Devine formula gives 60.5 kg, the Miller formula gives 59.1 kg, the Hamwi formula gives 58.0 kg, and the Robinson formula gives 57.5 kg.
Frequently Asked Questions
Which formula is the most accurate?
All four formulas provide reasonable estimates, but none accounts for body composition, muscle mass, or frame size. The Devine formula is the most commonly used in clinical settings. For a personalized assessment, combine these results with BMI and waist‑to‑height measurements.
Should I use ideal weight as my absolute target?
Ideal weight is a guideline, not a strict rule. Your healthiest weight depends on many factors including body composition, age, and activity level. Use this calculator as one reference point among others when setting your health and fitness goals.