Ideal Weight Calculator
Use this ideal weight calculator to compare several common height-based formulas. The numbers are reference points, not a single perfect weight.
Formula estimates vary. Treat them as reference ranges, not personal prescriptions.
How it's calculated
Ideal weight formulas use height above 5 feet plus sex-specific constants
Devine, Robinson, Miller, and Hamwi formulas were created for different contexts and produce slightly different estimates. Real healthy weight also depends on muscle, frame size, and health goals.
What your result means
| Category | Range | What it means |
|---|---|---|
| Formula estimate | Single reference | Useful for comparison, but too narrow to be a personal target by itself. |
| Healthy range | Broader range | Often more realistic than one exact number. |
| Performance weight | Goal-specific | Athletes may sit above or below formula estimates depending on sport and muscle mass. |
Why ideal weight is a range
There is no universal perfect weight. A healthy weight depends on muscle, frame size, waist circumference, blood markers, fitness, and how you feel.
Common ideal weight formulas
Devine, Robinson, Miller, and Hamwi are height-based formulas. They are simple and searchable, but they do not know your body composition.
How to choose a target
Use formula estimates as guardrails. A better goal is one you can maintain with good energy, strength, sleep, and sustainable habits.
Frequently asked questions
What is my ideal weight?
This calculator gives several formula estimates, but your true healthy range depends on body composition, frame size, and health markers.
Which ideal weight formula is most accurate?
No formula is perfect. Devine is common clinically, while Robinson, Miller, and Hamwi give useful comparisons.
Should I aim for one exact weight?
Usually no. A range is healthier and easier to maintain than a single number.
Can BMI and ideal weight disagree?
Yes. BMI gives a range from height and weight; ideal weight formulas estimate a target from height and sex. Both miss body composition.