How ideal weight is calculated
There is no single perfect weight, so this calculator shows several well-known formulas side by side: Devine, Robinson and Miller. Each estimates a healthy weight from your height and sex, and they differ slightly because they were built for different purposes. Seeing all three gives you a sensible range rather than one arbitrary number.
Worked example
For a man 175 cm tall, the Devine formula gives about 70.5 kg. The others land nearby, so a healthy target range might be roughly 68 to 72 kg.
Reading the result
These formulas use height and sex only, so they do not account for build, muscle or frame size. Treat the figure as a guide to a healthy range, not a strict goal, and read it alongside BMI and body fat for a fuller picture.
Frequently asked questions
Which ideal weight formula is best?
None is definitively best; they were built for different uses. Looking at Devine, Robinson and Miller together gives a healthy range rather than a single number.
Does ideal weight account for muscle?
No. These formulas use only height and sex, so muscular people may sit above the range while being perfectly healthy. Use it as a guide.
Which formula should I trust?
Devine is the most common. The three usually agree within a couple of kilograms, so use the range rather than a single number.
Does it account for muscle?
No. Ideal weight formulas use only height and sex. Athletes may sit above the figure and still be lean.
Is BMI better?
BMI and ideal weight give similar guidance. Use both plus body fat for a fuller picture.