BMI Calculator
Calculate your Body Mass Index using metric or imperial units.
Your BMI
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obese |
BMI Formula
BMI is calculated using the following formulas:
- Metric: BMI = weight(kg) ÷ height(m)²
- Imperial: BMI = 703 × weight(lbs) ÷ height(in)²
Note: BMI is a screening tool, not a diagnostic measure. Consult a healthcare professional for medical advice.
Frequently Asked Questions
What is a healthy BMI? ▼
A BMI between 18.5 and 24.9 is considered normal weight for most adults. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is obese.
Is BMI accurate for everyone? ▼
BMI is a general screening tool and may not be accurate for athletes (who have more muscle mass), the elderly, or pregnant women. Use it as a starting point and consult a doctor for a full assessment.
What is the BMI formula? ▼
For metric: BMI = weight in kg ÷ (height in meters)². For imperial: BMI = 703 × weight in lbs ÷ (height in inches)².
How can I lower my BMI? ▼
BMI can be lowered through a combination of regular physical activity and a balanced, calorie-appropriate diet. Speak with a healthcare provider for a personalized plan.