How the ideal weight calculator works
Enter your height and sex and the tool shows several reference weight estimates. It includes the healthy weight range based on the standard BMI band of 18.5 to 24.9 for your height, plus four classic clinical formulas, Devine, Robinson, Miller, and Hamwi, which were originally created to help with medication dosing rather than to define an aesthetic goal.
Why there is a range, not one number
There is no single correct weight for a given height. The formulas give different answers because they were derived from different populations and purposes, and the BMI based band spans several kilograms. Showing a range makes clear that a healthy weight is a zone, not a target, and that two healthy people of the same height can differ considerably.
What these formulas miss
The classic formulas use only height and sex, so they ignore muscle mass, frame size, age, and body composition. A muscular person may sit above these figures while being perfectly healthy. They are rough references, most useful as a sanity check, not as a goal to chase. Body composition tools like the body fat estimate add useful context.
Using the estimate well
Treat these numbers as orientation, not a verdict. Health is shaped by activity, diet quality, sleep, strength, and many factors beyond a number on a scale. If you are thinking about a weight change, a healthcare provider can help you set realistic, individual goals. This calculator is general information only and is not medical advice.
Frequently asked questions
What is my ideal weight? There is no single value; the tool shows a healthy range and several reference estimates instead.
Why do the formulas disagree? They come from different populations and were built for purposes like drug dosing, not a universal ideal.
Do these account for muscle? No, they use only height and sex, so muscular builds may read high.