Find your healthy weight range by BMI, plus how it compares to the Devine, Robinson, Miller and Hamwi medical formulas.
| Height | Min. Healthy Weight | Max. Healthy Weight |
|---|---|---|
| 150 cm (4'11") | 41.6 kg | 56.0 kg |
| 160 cm (5'3") | 47.4 kg | 63.7 kg |
| 165 cm (5'5") | 50.4 kg | 67.8 kg |
| 170 cm (5'7") | 53.5 kg | 72.0 kg |
| 175 cm (5'9") | 56.7 kg | 76.3 kg |
| 180 cm (5'11") | 59.9 kg | 80.7 kg |
| 185 cm (6'1") | 63.3 kg | 85.2 kg |
| 190 cm (6'3") | 66.8 kg | 89.9 kg |
Range applies to adults and does not account for muscle mass, frame size, age or pregnancy.
There is no single medical definition of ideal weight — different formulas were developed for different purposes, and this calculator shows you several side by side.
The most common approach multiplies the healthy Body Mass Index range (18.5–24.9) by your height in meters squared: weight = BMI × height(m)². It's simple and widely used by doctors as a first screening tool, but it doesn't distinguish muscle from fat.
Originally created to calculate drug dosages, it's now the most widely used "ideal body weight" formula in clinical medicine: Men: 50 kg + 2.3 kg per inch over 5 feet. Women: 45.5 kg + 2.3 kg per inch over 5 feet.
Both are refinements of Devine's original work, adjusting the base weight and per-inch increment slightly based on updated population data. Robinson tends to give a slightly higher figure; Miller a slightly lower one for taller people.
One of the earliest quick-reference formulas, still used informally: Men: 48 kg + 2.7 kg per inch over 5 feet. Women: 45.5 kg + 2.2 kg per inch over 5 feet. It tends to produce a lower estimate than the others for taller individuals.
For a man who is 178 cm (5'10") tall:
All four formulas land comfortably inside the BMI healthy range, which is typical — they were designed to approximate the midpoint of that range for an average frame. The formulas diverge more at extreme heights (very short or very tall), which is why the BMI range remains the broadest and most flexible reference.
It uses the normal BMI range (18.5–24.9) multiplied by your height in meters squared. This is the range most doctors use as a first screening reference.
The Devine formula (1974) is: Men = 50 kg + 2.3 kg per inch over 5 feet; Women = 45.5 kg + 2.3 kg per inch over 5 feet. It was originally developed for medication dosing and is still the most widely used clinical reference for "ideal body weight."
Each formula (BMI range, Devine, Robinson, Miller, Hamwi) was developed at a different time using different population data and for different purposes — some for drug dosing, others for general reference. They usually agree within a few kilograms for average heights but diverge more at height extremes.
No. All of these formulas are based only on height (and sometimes gender), so a muscular person can weigh well above the calculated "ideal" while having low body fat. Body composition tools like a body fat calculator give a more complete picture than weight alone.
Yes, most formulas use a lower base weight for women because women typically have a higher percentage of essential body fat and a smaller average frame at the same height. The BMI range itself is the same 18.5–24.9 for both genders.
Treat it as a starting point for a conversation with a healthcare provider, not a diagnosis. Factors like muscle mass, pregnancy, age, and ethnicity affect what's healthy for an individual. A gradual, sustainable approach using a calorie calculator and regular activity is generally recommended over rapid change.
Not always. BMI doesn't distinguish muscle from fat, so muscular athletes can show as "overweight" despite low body fat. In these cases, body fat percentage and waist circumference are more reliable indicators than weight-based formulas alone.