Ideal Weight Calculator
Compares the four common ideal body weight formulas for your height.
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The formula
weight = start + rate × inches over 5 ft Devine: men 50 + 2.3, women 45.5 + 2.3 Robinson: men 52 + 1.9, women 49 + 1.7 Miller: men 56.2 + 1.41, women 53.1 + 1.36 Hamwi: men 48 + 2.7, women 45.5 + 2.2
Each starts from a weight at 5 ft in kg, and adds kilograms per inch above it.
What to watch out for
Hamwi (1964) is the oldest. Devine (1974), Robinson (1983) and Miller (1983) came out of hospital pharmacy, where they are used for drug dosing, not as goals. All four ignore age, muscle and build. The healthy BMI range, from WHO, is shown as a wider guide.
Frequently Asked Questions
What is the ideal weight for a man of 5 ft 10 in?
Between 70.3 and 75.0 kg across the four formulas. These are estimates, not goals.
And for a woman of 5 ft 4 in?
Between 54.3 and 58.5 kg. These are estimates, not goals.
Why do the formulas disagree?
They were written at different times for different purposes, and none tells you what a healthy weight is for you. Treat the spread as a rough range rather than picking a number.
Does frame size change it?
A common adjustment to the Hamwi figure adds 10% for a large frame and takes off 10% for a small one. The other formulas are not usually adjusted this way.