BMI Calculator
Body mass index with the healthy weight range for your height.
Enter your values
Results update instantly as you type — no submit needed.
Results
- BMI
- 25.1
- Category
- Overweight
- Healthy weight range
- 125.3 lb – 168.6 lb
- Distance from range
- 1.4 lb over
Working
- 1BMI = 77.1 kg ÷ (1.75 m)² = 25.1
Quick answer
Body mass index is weight in kilograms divided by height in metres squared; 18.5–24.9 is classed as a healthy range for most adults.
BMI = kg ÷ m²
How to use the BMI Calculator
- 1Choose metric or imperial units.
- 2Enter your weight and height.
- 3Read your BMI and healthy range.
Frequently asked questions
Is BMI accurate for athletes?
No. Muscle is denser than fat, so muscular people often read as overweight despite low body fat. Use waist-to-height or body fat instead.
What BMI is healthy?
18.5 to 24.9 for most adults. Risk rises below 18.5 and above 25, though the cutoffs differ for some Asian populations.