Health & Fitness
Ideal Weight Calculator
Ideal Weight — it estimates ideal body weight with the Devine/Robinson formula from height and sex. This page runs that same calculation on your numbers, in your browser: no signup, no uploads, nothing stored.
Ideal Weight Calculator is a browser-based way to estimate your ideal weight. Feed it your sex and height and it computes an ideal-weight range on the spot, keeping your data local.
About this calculator
It estimates ideal body weight with the Devine/Robinson formula from height and sex. That is the whole of the calculation — the mistakes happen in the inputs. It matters when you want a quick screening number before deciding whether a habit, plan or measurement deserves a closer look. Worked example: For a 175 cm male (Devine formula): 50 + 2.3 × ((175−152.4)/2.54) = 70.5 kg as a rough reference, not a target. Use the calculator with your own figures; it runs entirely on your device.
How to use
- Select your sex.
- Enter your height in centimetres for the formulas.
- Press Calculate to see several ideal-weight estimates.
- Read them as a range, not a single fixed goal.
Why use Ideal Weight Calculator
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Educational
Uses common estimation formulas for educational purposes. Results are not medical advice and should not replace professional guidance.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Clear about formulas used and their limits, with disclaimers where they matter.
Common uses
Use it for setting realistic training goals
Use it for quick fitness reference
Ideal Weight alongside a workout plan
Use it when adjusting diet and exercise
Use it when planning a fitness routine
Use it when learning what a metric means
Technical notes
Ideal Weight Calculator estimates ideal body weight with the Devine/Robinson formula from height and sex.
These are general-population estimates and not a substitute for advice from a qualified clinician.
Nothing you type is uploaded — the calculation happens entirely on your device.
FAQ
Why show several ideal-weight formulas?
Devine, Robinson, Miller, and Hamwi each use slightly different constants, so presenting them together gives a realistic range instead of one debatable figure.
Are these formulas based only on height?
Yes — they estimate a reference weight from height and sex. They do not account for muscle, frame size, or body composition.
Which formula should I trust most?
No single formula is definitive. Many clinicians reference Devine, but the spread between them is more informative than any one value.
Does the Ideal Weight Calculator send my data to a server?
No. The Ideal Weight Calculator runs entirely in your browser — your inputs never leave your device, and nothing is uploaded or stored.
Worked example
For a 175 cm male (Devine formula): 50 + 2.3 × ((175−152.4)/2.54) = 70.5 kg as a rough reference, not a target.