How it works
What this calculadora actually does
Ideal Weight calculadora is built to give you a clean, explainable answer without the usual wall of ads — type the numbers, read the result, keep moving.
These numbers are guidance, not a prescription — your plate still matters more than the tracker. Think of an average week rather than today — then work out the numbers and the rest of this page explains what the answer means.
Devine (1974), Robinson (1983), Miller (1983) and Hamwi (1964) formulas all return slightly different "ideal" weights based on height. None is a definitive target — use them as a healthy weight window alongside BMI.
Following the method end to end
Here's what happens when you plug real numbers in.
Devine (1974), Robinson (1983), Miller (1983) and Hamwi (1964) formulas all return slightly different "ideal" weights based on height. None is a definitive target — use them as a healthy weight window alongside BMI.
Moments this tool earns its keep
Ideal Weight calculadora is aimed at people arriving with questions like these:
- "Devine formula"
- "Ideal weight for height"
- "What is a healthy weight"
- "What is ideal weight"
- "How to calculate ideal weight"
- "Ideal weight formula"
Where the number stops being useful
Every tool has an edge where it stops being the right answer. Ideal Weight calculadora is no exception:
- For legally binding tax or medical decisions — cross-check with HMRC, NHS or a qualified professional.
- For very large or very small extremes the rounding error outgrows the useful precision.
- When the underlying rate or threshold has changed since the page was last reviewed — always verify with the primary source.
- When the input you have is already a derived figure (net of something) — feeding it in as "gross" will double-subtract.
Mistakes we see over and over
Every time you work out the numbers for a new scenario, one of these creeps in — it's worth knowing them ahead of time.
- Assuming the UK and US versions of the same unit are interchangeable — they're not.
- Typing a comma where the tool expects a dot (or vice versa).
- Rounding early — particularly painful in percentages and compound growth.
- Ignoring the time window: a 'per year' answer makes no sense with a monthly input.
- Treating the answer as private: screenshots are fine, but the URL always reruns cleanly.
The sources behind the numbers
Where the maths needs an external authority, we cross-check against:
- NHS
- WHO
Works well alongside
If this question keeps coming up for you, the same cluster of tools usually comes next:
- BMI calculadora — Check your Body Mass Index in metric or imperial, with NHS weight categories explained.
- BMR calculadora — Estimate your Basal Metabolic Rate — the calories your body burns at rest — with the Mifflin-St Jeor equation.
How we keep this accurate
Our calculadoras run on pure, unit-tested functions — the same logic lives in the browser and in the CI test suite. When tax rates, thresholds or official figures move, the update lands within 24 hours of the announcement. You can read the editorial policy and corrections policy.
Found an out-of-date number on Ideal Weight calculadora or anywhere else in the Nutrition toolkit? Send it to the editorial desk and we'll patch it. Or browse the full calculadora directory for the next tool you need.