Ideal Body Weight Calculator
Find your optimal body weight based on clinical formulas (Robinson, Miller, Devine, Hamwi) and body frame adjustments.
Note: Ideal weight represents an evidence-based guideline rather than an absolute rule. Use BunnyCal to track habit consistency rather than obsessing over a single number.
ESTIMATED IDEAL WEIGHT
63.4 kg
You are currently +12.6 kg above target.
Scientific Formula Breakdown
Ideal Weight FAQs
What is an Ideal Body Weight (IBW)?
Ideal Body Weight (IBW) is an estimate of a healthy body weight based on sex and height. Originally developed by pharmacologists and clinicians to calculate optimal medical dosages, IBW formulas (Robinson, Miller, Devine, and Hamwi) provide reliable target weight benchmarks for fitness, health, and longevity.
Which ideal weight formula is the most accurate?
The Robinson (1983) and Miller (1983) formulas are generally considered the most modernized and accurate for average adults. However, health professionals recommend looking at the consensus average across Robinson, Miller, Devine, and Hamwi alongside the World Health Organization (WHO) healthy BMI range (18.5 - 24.9).
How does body frame size affect ideal weight?
Body frame size (small, medium, or large bone structure) can shift your ideal weight by approximately ±10%. A person with a large frame (measured by wrist circumference) will naturally have more skeletal and lean tissue mass than a small-framed person of the same height.
Can ideal weight calculators account for muscle mass?
Standard IBW formulas are based on population averages. If you have significant lean muscle mass from resistance training, your optimal weight may be higher than the mathematical formula estimate while remaining completely healthy.
