Ideal Weight Calculator
See your ideal body weight according to four well-known medical formulas, alongside the healthy BMI range for your height.
Your result appears here.
By Shah Rukh, software developer · Last updated:
The formulas
| Formula (year) | Men | Women |
|---|---|---|
| Robinson (1983) | 52 kg + 1.9 kg per inch over 5 ft | 49 kg + 1.7 kg per inch |
| Miller (1983) | 56.2 kg + 1.41 kg per inch | 53.1 kg + 1.36 kg per inch |
| Devine (1974) | 50 kg + 2.3 kg per inch | 45.5 kg + 2.3 kg per inch |
| Hamwi (1964) | 48 kg + 2.7 kg per inch | 45.5 kg + 2.2 kg per inch |
These formulas were designed for medication dosing and quick estimates, not personal goals. They don’t consider muscle, frame size or age, so treat the result as a range rather than a target. The healthy weight chart gives the BMI-based range for every height.
This is an estimate for general information, not medical advice. Talk to a doctor or registered dietitian before making big changes.
Frequently asked questions
Which ideal weight formula is best?
None is perfect. Looking at the range across all four, plus the healthy BMI range, gives a more realistic picture.
Why don’t the formulas include age?
They were created as simple height-based estimates. Healthy weight can vary with age, muscle and body shape.
What if I’m shorter than 5 feet?
The formulas are designed for heights of 5 ft (152 cm) and above, so they’re less reliable below that.
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