Free Online BMI Calculator

What is BMI (Body Mass Index)?

Body Mass Index (BMI) is a simple, reliable method to assess whether your body weight is appropriate for your height. It’s a valuable health metric used globally to identify whether someone is underweight, normal weight, overweight, or obese.

Why Use Toolsyra's Free BMI Calculator?

Our online BMI calculator is fast, accurate, and works on all devices. It helps you check your health status in seconds — with no ads, no signup, and no distractions.

• Instantly calculate BMI using weight and height
• 100% mobile responsive and lightweight
• Uses metric system (kg/cm)
• No data stored – privacy-friendly

BMI Calculation Formula

BMI = Weight (kg) ÷ Height (m²)

Example: If you weigh 70kg and are 170cm tall:
70 ÷ (1.7 × 1.7) = 24.2

BMI Classification Chart

Note: Athletes may have higher BMI due to muscle mass, not fat.

✅ Try Toolsyra’s BMI Tool Now!

This free BMI calculator is ideal for students, professionals, or anyone curious about their health. Use it today to find your exact BMI instantly.

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