Ideal Weight Calculator
Find your ideal body weight using 4 formulas — Devine, Robinson, Miller, and Hamwi. Supports metric and imperial units.
Ideal weight range
65.2 kg – 66.7 kg
Average: 66 kg
Formula breakdown
These formulas are based on height and gender. Athletes and muscular individuals may be healthy outside this range.
How to Use
- 1
Select units and gender
Choose metric or imperial, and select your gender.
- 2
Enter your height
Enter your height in cm or inches.
- 3
View your ideal range
See your ideal weight range and individual results from 4 medical formulas.
How It Works
This calculator estimates a healthy weight range using four established clinical formulas — Devine, Robinson, Miller, and Hamwi — rather than relying on a single number, since no single formula is universally most accurate.
Why four different formulas
Each formula (Devine, Robinson, Miller, Hamwi) was developed independently, using slightly different reference populations and assumptions, and each gives a somewhat different result for the same height and gender. Rather than picking one as definitively "correct," showing all four and their average gives a more honest healthy weight range rather than false precision from a single number.
What these formulas don't account for
All four formulas are based only on height and gender — none of them factor in muscle mass, frame size, or body composition, which is why a muscular or large-framed person may reasonably exceed these estimates while still being perfectly healthy.
Examples
A typical result range
For a 175 cm tall man, the four formulas typically produce estimates spanning roughly 65-70 kg, with the average landing around 67-68 kg — treated as a reference range rather than one precise target.
Interpreting a result that seems low
An athletic, muscular individual whose actual healthy weight sits above all four formula estimates isn't necessarily unhealthy — these formulas simply don't account for muscle mass, which weighs more than fat at the same volume.
Common Use Cases
- Getting a general reference range for healthy body weight based on height
- Comparing your current weight against a range rather than a single arbitrary target
- Starting point for discussion with a doctor or trainer about a personalized healthy weight goal
Tips
- Treat the output as a reference range, not a strict target — the average of all four formulas is more informative than fixating on any single formula's specific number.
- For a more complete picture of healthy weight, consider these formulas alongside BMI and, ideally, actual body composition (body fat %) rather than height-and-gender-based estimates alone.
Frequently Asked Questions
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