Discover your personalized ideal body weight using four established clinical formulas. Get a science-backed target range so you know exactly what to aim for on your fitness journey.
Your ideal weight appears here
Enter your height and gender above.
What the formulas mean and how to use this number.
Different formulas give different results because "ideal" depends on body frame, muscle mass, and lifestyle. The range shown reflects the spread across four validated formulas — your personal optimum lives somewhere in this range.
These formulas were developed for general populations, not athletes. A well-muscled person's ideal weight may be 5–10 kg higher than the formula suggests. Pair this with body fat percentage for a more complete picture.
Aim for 0.5 kg/week of fat loss — any faster risks muscle loss and metabolic adaptation. A structured resistance training program ensures the weight you lose is fat, not the muscle that gives you shape.
This calculator uses four established clinical formulas, each developed from different population studies. They all calculate from height, with adjustments for sex:
The average of all four provides the most balanced estimate. These were originally developed to guide medication dosing and clinical care, not athletic performance, so adjust accordingly if you carry significant muscle mass.
Ideal weight explained.
They are accurate reference ranges for average-build adults. They don't account for muscle mass or bone density. A bodybuilder may healthily weigh 15–20 kg above the formula result. Use them as a starting point, not an absolute target.
Neither is perfect in isolation. BMI uses your current weight; ideal weight formulas predict a target. Combine both with body fat percentage and waist-to-height ratio for the most comprehensive health picture.
Each formula was derived from a different population study with different methodologies. The Hamwi formula was developed for clinical medication dosing. Devine was for pharmacokinetics. Robinson and Miller aimed for broader health applications. The range between them captures this real-world variability.
Complete your health assessment.
Improve your health, productivity, and finances on forsuccess.today.
Browse All Tools →