Ideal Weight Calculator
Estimate your ideal body weight from height and sex using four classic formulas (Devine, Robinson, Miller, Hamwi). Free and private, in your browser.
Report a problemThese are population estimates from formulas built mainly on height and sex — they ignore your build, muscle, frame size and age, so the right weight for you may sit outside this range. This is an estimate, not medical advice.
How to use
- Choose metric (centimetres) or imperial (feet and inches) and pick your sex at the top.
- Type your height. The ideal-weight range and the four-formula breakdown update live as you type — there is nothing to submit.
- Read the big range first: it spans the lowest and highest estimate from the four classic formulas. The table below shows each formula on its own.
FAQ
Which formulas does this use?
It runs the four classic ideal body weight formulas — Devine (1974), Robinson (1983), Miller (1983) and Hamwi (1964). Each starts from a base weight at five feet (60 inches) of height and adds a set amount per inch above that, with different numbers for men and women. Because they were tuned for different purposes, they disagree by a few kilograms, so this tool shows the full range from the lowest to the highest plus each formula on its own line.
Is anything I type sent to a server?
No. Your height and sex are used for plain arithmetic right in your browser — nothing is uploaded or stored. The calculator works offline and keeps your numbers private.
Is this my target weight?
Not exactly. These formulas are quick population estimates based mostly on height; they do not know your frame size, muscle, body fat, age or health history, and they were never meant to be a personal goal. Treat the range as a rough reference point, not a diagnosis or a target, and talk to a health professional for advice about your own weight. This is an estimate, not medical advice.