BMI Calculator
Calculate your Body Mass Index instantly. Beautiful gauge, health insights, metric & imperial units. Completely free.
Health Insight
Your BMI result will appear here with personalized health information.
Balanced Diet
Eat nutrient-rich foods. Include fruits, vegetables, lean protein and whole grains in every meal.
Stay Active
Aim for at least 150 minutes of moderate exercise per week. Walking, cycling or swimming all count.
Stay Hydrated
Drink 8 glasses of water daily. Proper hydration helps metabolism and overall health.
Quality Sleep
Get 7-9 hours of sleep per night. Poor sleep is linked to weight gain and health issues.
BMI Categories
Underweight
BMI below 18.5
Normal Weight
BMI 18.5 - 24.9
Overweight
BMI 25 - 29.9
Obese
BMI 30 or above
Frequently Asked Questions
BMI (Body Mass Index) is a simple measure using your height and weight to estimate body fat. The formula is weight in kg divided by height in meters squared. It's widely used as a quick health screening tool.
A healthy BMI is between 18.5 and 24.9. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is considered obese. These ranges apply to most adults.
BMI doesn't distinguish between muscle and fat. Athletes with high muscle mass may show a high BMI despite being healthy. For a complete assessment, consult a healthcare professional who can measure body composition directly.
The BMI formula is the same for all adults. However, women typically carry more body fat than men at the same BMI, and older adults tend to have more body fat than younger adults at equal BMI levels.