Ideal Weight Calculator
Find your ideal body weight range using 5 scientific formulas — based on your height, gender, and body frame size.
📊 Results by Formula
Your ideal weight according to 5 scientific formulas. Highlighted row = most widely recommended.
| Formula | Ideal Weight | Best For |
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What Is Ideal Weight?
Ideal body weight is an estimate of the weight considered optimal for a given height and body frame — associated with the lowest risk of weight-related health problems. Unlike BMI, ideal weight formulas account for body frame size and give a specific target weight rather than simply categorising your current weight.
Robinson (1983): Male: 52kg + 1.9 per inch over 5ft | Female: 49kg + 1.7 per inch over 5ft
Miller (1983): Male: 56.2kg + 1.41 per inch | Female: 53.1kg + 1.36 per inch
Devine (1974): Male: 50kg + 2.3 per inch | Female: 45.5kg + 2.3 per inch
Hamwi (1964): Male: 48kg + 2.7 per inch | Female: 45.5kg + 2.2 per inch
BMI Range (WHO): Weight for BMI 18.5–24.9 at your height
Frequently Asked Questions
No single formula suits everyone perfectly. The Robinson formula and WHO BMI range are most applicable to modern populations. This calculator averages all five formulas to provide a more robust estimate than any single formula alone.
At a safe rate of 0.5–1 kg per week, divide your total weight to lose by your target weekly rate. Use our Daily Calorie Calculator to set up the right calorie target to reach your ideal weight sustainably.
No — muscular athletes may exceed ideal weight ranges while having very low body fat and excellent health. Use ideal weight as a general guide alongside BMI and body fat percentage for a complete picture.
Not necessarily. Where you feel best, have most energy, and can maintain most comfortably within that range is your personal ideal. Focus on the range, not a single number.
Most formulas do not account for age. Research suggests slightly higher weight (towards the upper end of ranges) may be protective for people over 65, helping maintain bone density and reserves during illness. Consult your doctor for age-specific guidance.
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