BMI calculator
Body mass index with both WHO general and Asian-population thresholds. Includes the disclaimer most tools skip.
Health calculators
Free calculators for the health questions worth asking yourself — with the disclaimers most tools skip. BMI live now, the rest shipping over the next few weeks.
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Every health calculator on this hub is a screening tool, not a diagnosis. They simplify population-level math into single numbers; the numbers correlate with health outcomes at the population level but say less about any individual than most calculators imply.
We try to make this clear in each tool's copy — what the formula knows, what it doesn't, what to pair it with. If a calculator tells you something concerning, talk to a doctor. If it tells you something reassuring, that's still not a substitute for one.
We're shipping new health tools constantly. Request a tool — a 30-second form straight to the founder. No marketing list, no data tracking.