Free BMI Calculator Online | Calculate Your Body Mass Index Instantly

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Free BMI Calculator

Calculate your Body Mass Index instantly.

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What is BMI?

Body Mass Index (BMI) is a simple measurement that estimates whether your weight is appropriate for your height. It is commonly used to identify weight categories that may be associated with health risks.

BMI is a useful screening tool for most adults, but it does not directly measure body fat, muscle mass, or overall fitness.

How is BMI Calculated?

The BMI formula is:

BMI = Weight (kg) Γ· HeightΒ² (mΒ²)

Example

  • Weight: 70 kg
  • Height: 1.70 m

Calculation:

70 Γ· (1.70 Γ— 1.70) = 24.2

BMI = 24.2

BMI Categories

BMI RangeCategory
Below 18.5Underweight
18.5 – 24.9Healthy Weight
25.0 – 29.9Overweight
30.0 and AboveObesity

Tips to Maintain a Healthy BMI

  • Eat a balanced diet rich in fruits and vegetables.
  • Include whole grains and lean protein in your meals.
  • Exercise for at least 150 minutes per week.
  • Drink enough water every day.
  • Get 7–9 hours of quality sleep each night.
  • Limit sugary drinks and processed foods.
  • Check your weight regularly to monitor changes

Frequently Asked Questions (FAQs)