BMI Calculator
Calculate your Body Mass Index and understand what it means for your health.
Your BMI
24.33
Category
Normal Weight
Disease Risk
Low
BMI Scale
Healthy Weight Range for Your Height
Minimum (BMI 18.5)
121.7 lbs
Maximum (BMI 24.9)
163.8 lbs
WHO BMI Classification
| Category | BMI Range | Health Risk |
|---|---|---|
| Underweight | < 18.5 | Low (other risks) |
| Normal Weight ← you | 18.5 – 24.9 | Minimal |
| Overweight | 25.0 – 29.9 | Increased |
| Obese Class I | 30.0 – 34.9 | High |
| Obese Class II | 35.0 – 39.9 | Very High |
| Obese Class III | ≥ 40.0 | Extremely High |
Guidance for Your Category
A normal BMI is associated with the lowest risk of weight-related health conditions.
- ✓Maintain regular physical activity (150+ min/week)
- ✓Focus on balanced nutrition with whole foods
- ✓Monitor weight periodically to stay in range
- ✓Prioritize sleep and stress management for metabolic health
Important: BMI is a screening tool, not a diagnostic measure. It does not account for muscle mass, bone density, age, sex, or fat distribution. Athletes may have a high BMI with low body fat. Always consult a healthcare provider for a complete health assessment.
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What is a BMI Calculator?
Body Mass Index (BMI) is a numerical value calculated from a person's height and weight. It is used as a screening tool to categorize individuals as underweight, normal weight, overweight, or obese. The formula is: BMI = weight (kg) ÷ height (m)².
BMI is widely used by healthcare providers because it is quick, inexpensive, and correlates reasonably well with body fat levels at the population level. However, it has significant limitations — it does not distinguish between fat mass and muscle mass, and it can misclassify muscular athletes as overweight.
The CDC defines BMI categories as: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (30 and above). These thresholds are the same for all adults but differ for children and teenagers.
How to Use the BMI Calculator
Calculate your BMI and understand what it means for your health.
- 1
Enter your height
Input your height in feet and inches (imperial) or centimeters (metric).
- 2
Enter your weight
Input your weight in pounds (imperial) or kilograms (metric).
- 3
View your BMI
Your BMI is calculated instantly and displayed with your weight category (underweight, normal, overweight, or obese).
- 4
Review the healthy range
The calculator shows the healthy weight range for your height, so you can see how far you are from the normal BMI range if applicable.
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