What should you weigh for your height? This calculator shows the healthy weight range based on BMI, plus four well-known ideal body weight formulas used by doctors and dietitians.
Ideal Weight Calculator
Formulas give a guide only. A healthy weight depends on frame, muscle and health history.
Ideal Weight Formulas Explained
Ideal body weight (IBW) formulas were created to help calculate medication doses, and they are now widely used as a general guide. All four start from a base weight at 5 feet tall and add a set amount per inch:
- Robinson (1983): Men 52 kg + 1.9 kg per inch over 5 ft. Women 49 kg + 1.7 kg.
- Miller (1983): Men 56.2 kg + 1.41 kg per inch. Women 53.1 kg + 1.36 kg.
- Devine (1974): Men 50 kg + 2.3 kg per inch. Women 45.5 kg + 2.3 kg.
- Hamwi (1964): Men 48 kg + 2.7 kg per inch. Women 45.5 kg + 2.2 kg.
Why There Is No Single Ideal Weight
Two people of the same height can be healthy at quite different weights depending on frame size, muscle and where they carry fat. That is why we show a range. For a fuller picture, check your body fat percentage and talk to your doctor.
Reaching a Healthy Weight
Small, steady changes work best. See how long it could take with our weight loss calculator, and set your daily target with the calorie calculator.
Frequently Asked Questions
What is the ideal weight for a 5 ft 6 in woman?
A healthy BMI range is roughly 115 to 154 lb, and the IBW formulas give about 129 to 135 lb.
What is the ideal weight for a 5 ft 10 in man?
A healthy BMI range is roughly 129 to 174 lb, and the IBW formulas give about 155 to 165 lb.
Do these formulas account for muscle?
No. Very muscular people may be healthy above these numbers.
Does ideal weight change with age?
The formulas don’t include age, but some research suggests a slightly higher BMI may be protective in older adults.
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