Free Online Calculator
BMI Calculator
Calculate your body mass index using your height and weight. This free BMI calculator helps you quickly estimate whether your BMI is underweight, normal, overweight, or in the obesity range.
Enter your height and weight to calculate your BMI.
How this BMI calculator works
BMI stands for body mass index. It is calculated by dividing your weight in kilograms by your height in meters squared.
The formula is:BMI = weight (kg) ÷ height² (m²)
For example, if your weight is 65 kg and your height is 170 cm, your BMI is about 22.5.
Frequently Asked Questions
What is a normal BMI?
In general, a BMI between 18.5 and 24.9 is considered a normal weight range.
Is BMI always accurate?
BMI is a useful general screening tool, but it does not directly measure body fat or health status for every individual.
Can I use this BMI calculator online for free?
Yes. Tool Nova provides this BMI calculator online for free with no sign-up required.