Use this free BMI calculator to quickly check your Body Mass Index and understand your weight category based on standard health guidelines.
What Is BMI?
Body Mass Index (BMI) is a simple calculation that uses your height and weight to estimate whether you are underweight, normal weight, overweight, or obese.
How Is BMI Calculated?
BMI is calculated by dividing your weight in kilograms by your height in meters squared.
Formula:
BMI = weight (kg) ÷ height² (m²)
BMI Categories
- Under 18.5 – Underweight
- 18.5 to 24.9 – Normal weight
- 25 to 29.9 – Overweight
- 30 and above – Obese
For a more complete picture of daily energy needs, you can also try our TDEE Calculator.
Frequently Asked Questions
Is BMI accurate for everyone?
BMI is a general guideline and does not directly measure body fat. Athletes or muscular individuals may have higher BMI values.
Can children use this calculator?
This calculator is intended for adults. Children and teenagers use different BMI charts.
Does BMI consider age or gender?
Standard BMI does not account for age or gender, but it is widely used for general health screening.
If you are tracking your health, you may also find these tools helpful:
- TDEE Calculator – understand daily calorie needs
- Tip Calculator – manage everyday expenses
- Date Difference Calculator – plan schedules and goals