BMI calculator
A cleaner health utility built inside the same premium FitStack experience.
Calculate BMI using metric or imperial units, see your ideal range, and get a fast interpretation that’s easy to understand.
Configuration
Enter your details
Live calculation updates as you type.
Important note
BMI is a screening tool, not a diagnosis.
For muscular athletes or body recomposition goals, pair BMI with body fat assessment, waist measurements, progress photos, and trainer guidance.
Assessment
Your BMI result
Waiting
Your BMI
--
Under
< 18.5
Normal
18.5-24.9
Over
25-29.9
Obesity
>= 30
Ideal range
--
Weight goal
--
Enter your height and weight to see your result.
Quick interpretation
Enter your values to begin.
WHO-style reference ranges
| BMI range | Classification | General interpretation |
|---|---|---|
| Below 18.5 | Underweight | Below recommended range |
| 18.5 to 24.9 | Normal | Within recommended range |
| 25.0 to 29.9 | Overweight | Above recommended range |
| 30 and above | Obesity | Higher health risk indicator |