Four Formulas
Devine, Robinson, Miller and Hamwi.
Compare Devine, Robinson, Miller and Hamwi reference estimates, plus the adult BMI healthy-weight range.
✓ 4 formulas✓ BMI range✓ Mobile friendly“Ideal” is a historical reference concept, not a universal health target.
Multiple formulas are shown rather than hiding disagreement behind one number.
Devine, Robinson, Miller and Hamwi.
Adult BMI 18.5–24.9 weight range.
Simple comparison of the four estimates.
Optional difference from selected reference.
An ideal weight calculator estimates a reference body weight mainly from height and sex. DigiSadhan shows four historical equations alongside an adult BMI-based healthy-weight range. The CDC describes BMI as a screening measure that should be considered with other health factors. citeturn0search7turn0search1
The term can be misleading. Classic ideal-body-weight equations were developed as clinical reference tools and do not directly measure muscle mass, body fat, frame size, waist circumference or medical history. citeturn0search3turn0search11
50 + 2.3 × (height in inches − 60) kgWomen45.5 + 2.3 × (height in inches − 60) kg52 + 1.9 × (height in inches − 60) kgWomen49 + 1.7 × (height in inches − 60) kg56.2 + 1.41 × (height in inches − 60) kgWomen53.1 + 1.36 × (height in inches − 60) kg48 + 2.7 × (height in inches − 60) kgWomen45.5 + 2.2 × (height in inches − 60) kgThese four equations are widely published as classic ideal-body-weight estimates. citeturn0search3turn0search11
For adults, CDC categories include healthy weight from BMI 18.5 to less than 25. citeturn0search7
BMI = weight(kg) ÷ height(m)²Lower weight = 18.5 × height²Upper weight = 24.9 × height²The BMI range is a range rather than one ideal number. BMI is a screening tool and does not distinguish muscle from fat. citeturn0search0
DigiSadhan calculates the arithmetic average of the four classic estimates. This is not a medically validated “best weight”; it is a transparent summary of the methods.
An optional BMI 22 reference is calculated as 22 × height². It is a mathematical reference, not a universal recommendation.
When current weight is entered, the tool shows the difference from the selected reference. This is mathematical context and should not be interpreted as an instruction to gain or lose weight.
The small/medium/large control applies an illustrative −10%, 0%, or +10% sensitivity scenario. It is not a universal clinical standard and is included to show how assumptions affect a reference number.
People of identical height can differ substantially in muscle, bone structure, body-fat distribution, fitness and health. A muscular person may weigh above a formula estimate while being healthy. Health should never be judged from one number.
The CDC notes that BMI and waist circumference can provide information about healthy weight, while broader health factors also matter. citeturn0search4
The tool converts metric or US height into inches, applies all four equations, converts outputs to kg or pounds, calculates the BMI healthy range and optional BMI-22 reference, then compares current weight with the selected reference.
The results area uses a responsive healthy-range bar, an animated marker and formula cards that appear after calculation. The same layout remains consistent across phones, tablets and desktops.
These equations are estimates and do not directly measure body composition. A reliable tool should communicate uncertainty instead of displaying false precision. Multiple methods provide useful context.
This is an adult reference calculator. Children and teenagers require growth-based assessment rather than adult ideal-weight formulas.
Strength, cardiovascular fitness, nutrition, recovery, waist measurement and body composition can be more meaningful than chasing a formula-derived number. Avoid extreme restriction or unsafe exercise.
Use the result as a reference map: compare formulas, review the BMI range, consider your current weight and focus on sustainable health. Individualized professional advice should take priority over a generic calculator.
| Formula | Men | Women |
|---|---|---|
| Devine | 50 + 2.3 × inches over 60 | 45.5 + 2.3 × inches over 60 |
| Robinson | 52 + 1.9 × inches over 60 | 49 + 1.7 × inches over 60 |
| Miller | 56.2 + 1.41 × inches over 60 | 53.1 + 1.36 × inches over 60 |
| Hamwi | 48 + 2.7 × inches over 60 | 45.5 + 2.2 × inches over 60 |
| BMI | 18.5–24.9 × height² | |
None should be treated as the single correct answer. Comparing methods is more transparent.
No. Ideal-weight equations are reference estimates; health needs broader context.
Yes, but these height-based formulas do not directly measure muscle mass.
No. Pediatric growth assessment uses different methods.
This DigiSadhan calculator is educational only. Formula results are population-based estimates, not personalized medical targets. BMI is a screening measure and does not directly measure body fat or distinguish muscle from fat. Do not use this tool for extreme diet, exercise or treatment decisions. Children, pregnant people, people with medical conditions or eating-disorder histories, and anyone concerned about weight should consult a qualified healthcare professional.