Calculate your ideal weight

Estimate your ideal weight and your healthy weight range from your height. Free, instant and no sign-up.

Your measurements

Sex

Enter your height in centimetres (e.g. 170).

Your result

65
kg: ideal weight (Lorentz formula)
Healthy weight range53-72 kg
For a BMI of 18.5 to 24.9normal

Your « ideal weight » is only an estimate: the weight at which you feel your best also depends on your build and your muscle mass.

Calculate my BMI Weight loss guides

Ideal weight formulas

Formula How it works
Lorentz Adjusts weight for height and sex
WHO range (BMI) Weight corresponding to a BMI of 18.5 to 24.9
Devine Medical formula based on height

How is ideal weight calculated?

Our calculator uses the Lorentz formula, one of the best known, which adjusts weight for height and sex. Alongside it, it shows your healthy weight range: the range of weights corresponding to a BMI between 18.5 and 24.9 for your height.

Ideal weight or healthy weight for you?

The theoretical ideal weight does not take your muscle mass or build into account. Your comfortable healthy weight (the one where you feel well and healthy) may differ. See these figures as reference points, not absolute targets.

To go further, calculate your BMI, estimate your calorie needs, or read our weight loss guides.

Frequently asked questions

How do you calculate your ideal weight?
Several formulas exist (Lorentz, Devine…). The simplest is to aim for a weight corresponding to a BMI between 18.5 and 24.9 for your height. Our calculator does both for you.
Is ideal weight the same for a man and a woman?
At the same height, the theoretical ideal weight is slightly higher for a man, because the Lorentz formula takes sex into account. The healthy weight range (BMI) is the same.
Do I have to reach my ideal weight?
No, it is a reference point, not an obligation. Your comfortable healthy weight depends on your build, your muscle mass and your wellbeing. What matters is being in good health.
This tool provides an estimate for information only and does not replace the advice of a health professional. No data entered on this page is collected or stored.