Ideal Weight Calculator
What’s a healthy weight for your height? See an estimate from the Devine formula and the healthy BMI range — two useful reference points.
Nutrition and fitness planning tools
Learn moreA range, not a single number
“Ideal weight” is really a healthy range, not a single figure. The Devine formula gives a classic point estimate, while the healthy BMI range (18.5–24.9) spans a band for your height. Neither accounts for muscle mass or frame size, so athletes and very muscular people often sit above these numbers while perfectly healthy.
How it’s calculated & sources
Devine formula: 50 kg (male) or 45.5 kg (female) + 2.3 kg per inch over 5 feet. The BMI range converts the 18.5–24.9 thresholds to pounds for your height.
Benchmark: the Devine formula and the WHO healthy BMI range (18.5–24.9) — both are estimates that don’t capture body composition.
Results update as you type and are general estimates, not personalized financial, tax, medical or legal advice. Verify with a professional.
Worked example
For a 5′9″ male, the Devine estimate is about 160 lb, within a healthy BMI range of roughly 125–169 lb.
Frequently asked questions
Is BMI accurate for everyone?
No — it doesn’t distinguish muscle from fat, so it can mislabel athletes and may miss risk in others. Use it as one signal alongside waist size and body composition.
Which number should I aim for?
Treat the BMI range as a healthy target band and the Devine figure as a midpoint. Your best weight also depends on fitness, health markers and how you feel.