Health Calculators

Health numbers are only useful when you know what they do and do not measure. The calculators in this category work out the standard figures — body mass index, and the weight range that would put you inside it — and then say where the standard stops being reliable. BMI reads muscle as mass, does not apply at all during pregnancy, and the thresholds that flag risk shift with ethnic background and with age. Every tool here shows the formula it used and the assumptions behind it, so the answer arrives with its caveats attached rather than as a verdict. None of it is medical advice, and none of it replaces a conversation with your doctor.