Most “ideal weight” calculators pick a single published formula, run your height through it, and hand you one number as if it were a verdict. That’s a false kind of precision — the formula they picked is one of several respected estimates, not a settled answer.
Our ideal weight calculator does it differently:
- Three formulas, shown together — Devine (1974), Robinson (1983), and Miller (1983) each run on your height and sex, so you see the actual spread between independent published estimates instead of one cherry-picked figure.
- Instant — results update as you type, in kilograms and pounds, no submit button.
- Shareable — your sex, units, and height live in the link, so you can send an exact result to anyone.
- Honest about limits — this is a general estimate, not medical advice, and we say so plainly, including the real limitation these formulas have for adults under 5 feet tall.
If you’ve ever gotten a different “ideal weight” from two different calculators and wondered which one was lying to you — neither was. They were just using different formulas. Ours shows you all three so you can judge the range for yourself, and it’s embeddable on your own site with one iframe.