Free Calculator

⚖️ BMI Calculator

Calculate your Body Mass Index instantly and see where you fall on the healthy weight range.

Height (cm)
Weight (kg)
Age (optional)
Underweight
<18.5
Normal
18.5–25
Overweight
25–30
Obese
>30
<18.5Underweight
18.5–24.9Normal
25–29.9Overweight
>30Obese

How is BMI calculated?

BMI = Weight (kg) ÷ Height² (m²). For imperial: BMI = 703 × Weight (lbs) ÷ Height² (inches²).

BMI Limitations

BMI doesn't account for muscle mass, bone density, or fat distribution. Athletes may have a high BMI but still be healthy. Always consult a doctor for health advice.

Healthy BMI Range

A BMI between 18.5 and 24.9 is generally considered healthy for adults. Children and teenagers use age-specific BMI-for-age charts.