Calculateur de Poids Idéal
Estimate your ideal body weight based on your height, sex, and frame size using multiple medical formulas.
Your ideal body weight is a range that is associated with the lowest health risks for a given height. This calculator provides estimates using three well-known formulas: Robinson, Miller, Devine, and the Hamwi method. Each was developed for different purposes — from anesthesia dosing to life insurance assessments — which is why they produce slightly different results.
No single formula can give you a perfect target, because ideal weight depends on your muscle mass, bone density, body fat distribution, and frame size. The range between the lowest and highest estimate is typically 10-20 pounds (5-9 kg) — all of which may be healthy for someone of your height and build.
Rather than chasing a specific number, use this range as a general reference alongside other health markers. Your body fat percentage and TDEE give a much more complete picture of your health than your weight alone. Track your progress over time, not against an arbitrary number.
A desirable weight calculator and optimal weight calculator work the same way — they estimate the weight range where health risks are lowest. The best weight calculator for you is one that accounts for your frame size and muscle mass alongside height. Use the result as a starting point, then adjust based on how you feel, your energy levels, and your body composition. If you want to see how your weight relates to your height on a reference chart, visit our height and weight chart for visual tables.
Ideal Body Weight Formulas
Different medical formulas provide slightly different estimates of ideal body weight. This calculator uses four common formulas:
- Devine formula (1974) — Originally for drug dosing, now widely used. Male: 50 kg + 2.3 kg per inch over 5ft. Female: 45.5 kg + 2.3 kg per inch over 5ft.
- Miller formula (1983) — Male: 56.2 kg + 1.41 kg per inch over 5ft. Female: 53.1 kg + 1.36 kg per inch over 5ft.
- Hamwi formula (1964) — Male: 48 kg + 2.7 kg per inch over 5ft. Female: 45.5 kg + 2.2 kg per inch over 5ft.
- Robinson formula (1983) — Male: 52 kg + 1.9 kg per inch over 5ft. Female: 49 kg + 1.7 kg per inch over 5ft.
An optimal weight calculator works by comparing your height against population averages to determine the weight range associated with lowest health risk. The four formulas above each define "optimal" slightly differently: Devine was developed for clinical drug dosing, Hamwi for insurance risk assessment, and Miller/Robinson as refinements based on newer data. By showing results from all four, this calculator helps you determine your ideal weight with confidence.
To determine your optimal weight more precisely, consider not just the formula results but also your body fat percentage, activity level, and how you feel at a given weight. The best weight calculator for you is one that you use consistently as part of a broader health tracking routine. Pair your results with our height and weight chart for visual reference or check your BMI for a standardized health screening.
Note: Ideal weight formulas are estimates and don't account for muscle mass, body composition, or individual variation. Use our Calculateur IMC and Calculateur de Masse Grasse for a more complete health assessment.
Frequently Asked Questions
What is ideal body weight?
Ideal body weight is an estimate of a healthy weight for your height. Common formulas include Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964).
Which ideal weight formula is most accurate?
The Miller formula (1983) is generally most accurate, but no formula accounts for muscle mass or body composition. Use it as a starting point.
What is the difference between ideal weight and healthy weight?
Ideal weight formulas give a single number. Healthy weight is a range based on BMI (18.5-24.9). Your ideal weight may fall within or outside this range.
How does frame size affect ideal weight?
Larger-framed individuals may have a higher ideal weight than small-framed people of the same height. Our calculator adjusts for frame size.