Healthy Weight Range Calculator

Your healthy weight range is the span of weights that puts you in the healthy BMI band for your height. Rather than a single "ideal" number, it's a band — because a range of weights can be perfectly healthy for the same height, depending on your build and muscle mass.

We calculate it straight from the World Health Organization's healthy BMI band. On the standard scale that band is a BMI of 18.5 to 24.9; for the India region we apply the WHO's Asian cutoffs, where the healthy band tops out lower (up to 22.9) because health risk rises at a lower BMI. That's why the same height gives a lower upper limit under the India setting.

Treat the range as a guide, not a finish line. Sitting a little outside it isn't automatically a problem — especially if you're very muscular, in which case a Body Fat % estimate is more informative. And where within the range you feel and perform best is individual.

The healthy weight range is most meaningful for adults of average, moderately active build — the same population the WHO BMI cutoffs were validated against. For most people it's a reasonable, evidence-based target band.

It's least accurate for the same groups where BMI struggles: competitive athletes and heavily muscled individuals (who may sit above it without excess fat), older adults who've lost muscle (who may sit inside it while carrying more fat than ideal), and it isn't intended for children, adolescents, or during pregnancy. In those cases, pair it with a Body Fat % estimate and professional judgement.

Formula. Healthy weight = BMI × height(m)², evaluated at the low and high ends of the healthy BMI band. So for your height we compute 18.5 × height² for the lower bound and 24.9 × height² (or 22.9 × height² for the India region) for the upper bound. Height entered in feet/inches is converted first, and the result is shown in the weight unit that matches your region.

Why two ranges. This is a direct inversion of the same WHO BMI classification the BMI calculator uses — including the WHO Expert Consultation's separate, lower cutoffs for Asian populations. Switching region changes the upper bound, not just the label.

Confidence. We label it high confidence because it derives directly from the population-validated WHO cutoffs. It inherits BMI's one big caveat, though: it can't account for muscle mass or body composition, so use it as a screen and a guide, not a precise personal prescription.