Your ideal weight. As a range.
Enter your height and physical basis: you see the healthy weight range according to the World Health Organization and, for comparison, the classic Broca, Devine and Robinson formulas.
Guidance for healthy adults, not medical advice.
How it is calculated
- Healthy range: the weight at which your BMI is between 18.5 and 24.9 – how the WHO defines normal weight in adults. Example: 1.70 m gives 54 to 72 kg.
- Broca: normal weight = height in cm − 100, “ideal weight” = normal weight − 10 % for men and − 15 % for women.
- Devine (1974): men 50 kg, women 45.5 kg, plus 2.3 kg per inch (2.54 cm) above 1.52 m. Robinson (1983): men 52 kg plus 1.9 kg, women 49 kg plus 1.7 kg per inch. Both come from drug dosing.
What the value does not show
- There is no single “ideal” weight. What is right depends on muscle, build, age and health.
- Devine and Robinson were developed for drug dosing, not as a health or beauty goal.
- Children, teenagers and pregnancy need different standards.
- Waist size and fitness often say more about health than weight alone.
Frequently asked questions
What is the ideal weight for a woman who is 1.70 m tall?
The healthy range is 54 to 72 kg (BMI 18.5 to 24.9). Broca gives 59.5 kg, Devine 61.4 kg and Robinson 60.8 kg – all within the healthy range.
What is the ideal weight for a man who is 1.80 m tall?
The healthy range is 60 to 80 kg. Broca gives 72 kg, Devine 75 kg and Robinson 72.6 kg.
Is the Broca index still used?
It is a rule of thumb from the 19th century and hardly used today. For adults, experts look at the BMI range, waist size and overall health.
How do I reach my target weight?
Slowly and sustainably. The calorie deficit calculator shows you a safe calorie target and roughly when you will reach your goal.
Sources
- World Health Organization (WHO): Obesity and overweight – Fact sheet.
- Pai MP, Paloucek FP (2000): The origin of the „ideal“ body weight equations. Annals of Pharmacotherapy 34(9).
- Robinson JD, Lupkiewicz SM, Palenik L et al. (1983): Determination of ideal body weight for drug dosage calculations. American Journal of Hospital Pharmacy 40(6).
More calculators
BMI calculator
Body mass index with category and healthy weight for your height.
Body fat calculator
Body fat percentage with a tape measure – rated by age.
Calorie deficit calculator
Calorie target, deficit and the date for your target weight.
Calorie calculator
Calorie needs and starting value – the same calculation as in the app.
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