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BMI Calculator 2026

Calculate your Body Mass Index (BMI) to understand your weight relative to your height. Get instant BMI classification and ideal weight range recommendations.

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BMI Formula

Metric: BMI = weight(kg) ÷ height(m)²
Imperial: BMI = weight(lbs) × 703 ÷ height(in)²
Where height is converted to meters: height(inches) × 0.0254

BMI Categories

Underweight< 18.5
Normal Weight18.5 - 24.9
Overweight25.0 - 29.9
Obese≥ 30.0

Health Tips

  • • Maintain a balanced diet
  • • Regular exercise (swimming recommended)
  • • Consult healthcare professionals
  • • Monitor your progress

BMI Calculator 2026 - Calculate Body Mass Index Online

Calculate your Body Mass Index (BMI) instantly using our free BMI calculator 2026. Get accurate BMI classification (Underweight, Normal Weight, Overweight, Obese), ideal weight range recommendations, and health tips. Our calculator supports both metric (kg, cm) and imperial (lbs, ft-in) units for worldwide compatibility.

What is BMI (Body Mass Index)?

Body Mass Index (BMI) is a measure of body fat based on height and weight. It is calculated using the formula: BMI = weight(kg) ÷ height(m)² for metric units, or BMI = weight(lbs) × 703 ÷ height(in)² for imperial units. BMI is widely used as a screening tool to assess if a person's weight is appropriate for their height.

BMI Categories and Classifications

BMI is classified into four main categories:

  • Underweight: BMI less than 18.5 - May indicate insufficient body weight
  • Normal Weight: BMI 18.5 to 24.9 - Healthy weight range for most adults
  • Overweight: BMI 25.0 to 29.9 - May indicate excess body weight
  • Obese: BMI 30.0 or higher - May indicate significant excess body weight

Limitations of BMI Calculator

While BMI is a useful screening tool, it has limitations. BMI doesn't distinguish between muscle and fat mass, so athletes with high muscle mass may have a high BMI but low body fat percentage. For comprehensive health assessment, consider combining BMI with other measurements like body fat percentage, waist circumference, and overall fitness level. Always consult healthcare professionals for personalized health advice.

How to Improve Your BMI

  • Maintain a balanced diet with appropriate calorie intake for your activity level
  • Engage in regular exercise - swimming is excellent for full-body fitness and weight management
  • Include strength training to build muscle mass and improve body composition
  • Set realistic weight goals and track your progress over time
  • Consult healthcare professionals or nutritionists for personalized guidance
  • Focus on sustainable lifestyle changes rather than quick fixes

Key Features of Our BMI Calculator

  • Instant BMI calculation using the standard WHO-approved formula
  • Support for both metric (kg, cm) and imperial (lbs, ft-in) units
  • Automatic BMI classification into health categories
  • Ideal weight range recommendations based on your height
  • Health tips and recommendations based on your BMI category
  • Mobile-friendly design for on-the-go calculations
  • Completely free to use with no registration required

About BMI Calculator

What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. It's widely used to assess if a person's weight is appropriate for their height.

Whether you're looking to lose weight, gain muscle, or maintain your current fitness level, our BMI calculator provides valuable insights into your body composition.

Limitations of BMI

BMI doesn't distinguish between muscle and fat mass. Athletes with high muscle mass may have a high BMI but low body fat percentage.

For comprehensive health assessment, consider combining BMI with other measurements like body fat percentage and waist circumference.

Ready to Improve Your Health?

Join Ishita Swimming Academy for professional fitness guidance and swimming programs.

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