Calculate your Body Mass Index instantly – Check if you're underweight, normal, overweight, or obese
Last Updated: April 5, 2026 | ⭐ 4.9/5 Rating | 50,000+ Users Monthly
Body Mass Index (BMI) is a simple calculation that uses your height and weight to estimate whether you have a healthy body weight. It is a widely used screening tool by healthcare professionals worldwide to identify potential weight-related health risks.
BMI = Weight (kg) ÷ Height (m²)
Example: 70 kg ÷ (1.7 m × 1.7 m) = 24.2 (Normal weight)
BMI less than 18.5
BMI 18.5 – 24.9
BMI 25 – 29.9
BMI 30 or more
Maintaining a healthy BMI is crucial because being underweight or overweight can significantly impact your overall health. Research shows that individuals with a BMI outside the normal range are at higher risk for various health conditions: