Ideal Weight Calculator
Compare adult ideal body weight formulas and a healthy BMI range for your height.
Personal Details
Enter height and formula sex to compare adult ideal body weight estimates.
Result Context
Use the formulas as a planning reference, not as a required target.
Formula-based ideal weight does not account for frame size, ethnicity, body composition, pregnancy, medical history, or athletic build. The healthy BMI range is intentionally broader than a single formula estimate.
Your Ideal Weight Estimate
Formula average, formula spread, and adult healthy BMI range.
Formula Estimates
Formula Reference Point
The average summarizes the four formulas, while the range shows how much they differ. Use both alongside body composition and real-world health context.
Ideal Weight Formulas
These common adult formulas use height and formula sex, then adjust per inch over five feet.
| Formula | Male | Female |
|---|---|---|
| Devine | 50 kg + 2.3 kg per inch over 5 ft | 45.5 kg + 2.3 kg per inch over 5 ft |
| Robinson | 52 kg + 1.9 kg per inch over 5 ft | 49 kg + 1.7 kg per inch over 5 ft |
| Miller | 56.2 kg + 1.41 kg per inch over 5 ft | 53.1 kg + 1.36 kg per inch over 5 ft |
| Hamwi | 48 kg + 2.7 kg per inch over 5 ft | 45.5 kg + 2.2 kg per inch over 5 ft |
How To Interpret The Result
Use the estimates as a planning reference, not a diagnosis or target you must hit.
Formula average
A compact midpoint across the four formulas. It is useful for a quick reference but should not override body composition context.
Formula range
The spread shows how much the formulas disagree. A wider spread is a reminder that ideal weight is only an estimate.
Healthy BMI range
This broader range maps height to adult BMI 18.5-24.9. It is a screening range, not a personalized medical target.
Ideal Weight Calculator FAQ
Common questions about formula-based adult ideal weight estimates.
Which ideal weight formula is best?
No single formula is best for every adult. The calculator shows several common formulas and their average so you can see the spread rather than treating one number as exact.
Is ideal weight the same as a healthy weight?
Not exactly. Formula-based ideal weight is a rough historical estimate. The healthy BMI range gives a broader screening range for adult height.
Does this calculator work for athletes?
It can be a reference point, but athletes and people with high muscle mass may sit above formula estimates without that alone indicating a health problem.