Ideal Weight Calculator
Estimate your ideal body weight using several common formulas including Devine, Robinson, Miller, and Hamwi. This calculator gives a formula-based average, not a medical target.
Add your height and gender to estimate your ideal body weight.
What Is an Ideal Weight Calculator?
An Ideal Weight Calculator estimates a reference body weight based on height and gender. Unlike a healthy weight range calculator, which usually uses BMI ranges, ideal body weight calculators use specific formulas developed for clinical and practical reference.
Ideal Weight Calculator Formula
This calculator compares four common formulas: Devine, Robinson, Miller, and Hamwi. These formulas are based on height above five feet. If height is below five feet, the calculator still gives an estimate, but formulas are generally more useful for adult height ranges.
| Formula | Male | Female |
|---|---|---|
| Devine | 50 + 2.3kg per inch over 5ft | 45.5 + 2.3kg per inch over 5ft |
| Robinson | 52 + 1.9kg per inch over 5ft | 49 + 1.7kg per inch over 5ft |
| Miller | 56.2 + 1.41kg per inch over 5ft | 53.1 + 1.36kg per inch over 5ft |
| Hamwi | 48 + 2.7kg per inch over 5ft | 45.5 + 2.2kg per inch over 5ft |
Ideal Weight vs Healthy Weight
Ideal weight is usually a single estimate or average from formulas. Healthy weight is usually a wider range. A healthy weight range may be more flexible because people differ in muscle mass, bone structure, age, and body composition.
Ideal Weight For Men
Ideal weight formulas for men usually start with a higher base weight because average lean mass is often higher. However, individual differences are important. A muscular person may weigh more than formula estimates while still having healthy body composition.
Ideal Weight For Women
Ideal weight formulas for women use a different base value. These estimates should not be treated as appearance goals. They are reference values and should be compared with health, body composition, and personal wellbeing.
Why Formulas Give Different Results
Each formula was created using different assumptions. That is why the Devine, Robinson, Miller, and Hamwi results may not match exactly. The average value helps give a balanced reference instead of relying on only one formula.
Limitations of Ideal Body Weight
Ideal weight calculators do not measure fat mass, lean body mass, waist size, fitness level, hydration, or health status. They should be used as general references, not strict targets.
Ideal Weight Calculator FAQ
Is ideal weight the same as healthy weight?
No. Ideal weight is often a formula-based estimate, while healthy weight is usually a wider range based on health context.
Which ideal weight formula is best?
No single formula is perfect. This calculator shows several formulas and provides an average estimate.
Can athletes weigh more than ideal weight?
Yes. Athletes or muscular individuals may weigh more than formula estimates due to higher lean mass.
Should I target my exact ideal weight?
Not necessarily. Use the result as a reference, then consider body composition, waist size, health markers, and lifestyle.