Home / Calculators / BMI Calculator Online
BMI Calculator Online
Check your Body Mass Index (BMI), WHO weight category, and ideal weight range for your height.
23.5Your BMI Score
Normal WeightWHO Category
53.5 – 72.0 kgHealthy Weight Range
Understanding Body Mass Index (BMI) Categories
Body Mass Index (BMI) is a screening ratio of weight-to-height squared used globally by healthcare providers and fitness programs to estimate weight categories in adults:
BMI = Weight (kg) / [ Height (m) ]²
- Underweight: BMI below 18.5
- Normal / Healthy Weight: BMI 18.5 to 24.9
- Overweight: BMI 25.0 to 29.9
- Obesity: BMI 30.0 and above
Frequently Asked Questions
Is BMI a medical diagnosis?
No. BMI is a general screening indicator and does not distinguish between muscle mass and body fat. Athletes with high muscle mass may have a high BMI while maintaining low body fat.
How is the Healthy Weight Range calculated?
It multiplies the WHO normal BMI bounds (18.5 and 24.9) by your height in meters squared.
Are my height and weight saved anywhere?
No. The calculation runs entirely in your browser tab.