Find your ideal body weight with the Devine, Robinson, Miller and Hamwi formulas, plus your healthy BMI range.
Formulas: Devine, Robinson, Miller and Hamwi — classic estimates for ideal body weight. They do not account for muscle mass; use as a rough guide.
Choose your gender and enter your height and weight. The tool applies the four classic ideal weight formulas and shows your healthy BMI range (18.5-24.9) with your current BMI highlighted.
The Devine, Robinson, Miller and Hamwi formulas were developed for clinical drug dosing, not as health targets. They do not account for muscle mass, bone structure or age — a muscular athlete can exceed them while being perfectly healthy. The healthy BMI range (18.5–24.9) is a more useful general reference than any single number.
This tool provides general information only and is not medical advice. For weight management decisions, consult a qualified healthcare professional.
Everything runs entirely in your browser. Nothing you type is ever sent to any server or stored.
Devine, Robinson, Miller and Hamwi — four classic clinical formulas for estimating ideal body weight by height and gender.
18.5 to 24.9 is considered healthy for most adults. The tool converts that range into kilograms for your height.
They are estimates that do not account for muscle mass or body composition. Athletes often exceed them healthily.
Men: 50 kg + 2.3 kg per inch over 5 feet. Women: 45.5 kg + 2.3 kg per inch over 5 feet.
No — frame size, muscle and age matter. Use the range, not a single number.
Yes, completely free with no account.
No — these are classic reference estimates. Speak with a healthcare professional for personal guidance.