Ideal Weight Calculator

Estimate ideal body weight from height and sex using four standard formulas.

Reviewed by the WorldCalcs team · Methodology · Last reviewed: June 2026

Height (ft)Height (in)

Formula	kg	lb
Devine	73.0	160.9
Robinson	71.0	156.5
Miller	70.3	155.0
Hamwi	75.0	165.3

What is ideal body weight?

Ideal body weight is a rough target weight for your height, used as a general guide. Several formulas exist, so this tool shows a range rather than a single number — real healthy weight varies by build, age and body composition.

How it's calculated

Each formula starts from a base weight at 5 feet (60 inches) and adds a set amount per inch above that. Example: a man 5 ft 10 in tall gets roughly 70–75 kg depending on the formula (Devine 73.0 kg, Hamwi 75.0 kg).

All calculations happen in your browser. Nothing is sent, stored, or tracked.

Results are estimates and may contain errors — for general information only, not professional advice. Always verify before relying on them. Disclaimer

How to use

Choose metric or imperial, pick sex and enter your height. The tool shows four ideal-weight estimates side by side so you can see the range.

Treat the numbers as a guideline. They use only height and sex, so build, age and body composition still matter.

Frequently asked questions

Which ideal weight formula is best?+

There is no single best one; Devine is the most widely used, so comparing all four gives a sensible range.

Is ideal body weight the same as a healthy weight?+

Not exactly. It is a rough guide; BMI and body composition give a fuller picture of a healthy weight.

Why do the formulas give different numbers?+

Each was derived from different data and assumptions, so they weight height slightly differently.

Does ideal weight depend on age?+

These formulas use only height and sex; age and muscle mass also matter, so treat the result as a guideline.

References

Devine BJ (1974), Robinson JD et al. (1983), Miller DR et al. (1983) and Hamwi GJ (1964) ideal body weight formulas.