BMI Health Calculator

Understand your body mass index, start a healthy life

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BMI Calculator

Your BMI Value

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Underweight
Normal
Overweight
Obese

What is BMI?

BMI (Body Mass Index) is an internationally used standard for measuring the degree of body fat. It evaluates whether a person's weight is within a healthy range by calculating the ratio of weight to height.

BMI Calculation Principle

The BMI calculation formula is: Weight(kg) ÷ Height(m)²

For example, a person with a height of 170cm and a weight of 65kg, the BMI calculation is as follows:

65 ÷ (1.7 × 1.7) ≈ 22.5

BMI Normal Range (International Standard)

BMI Range Weight Status
Less than 18.5 Underweight
18.5 - 24.9 Normal
25.0 - 29.9 Overweight
30.0 or greater Obese

Note: The Chinese Nutrition Society recommends that the normal BMI range for Chinese people is 18.5-23.9, slightly lower than the international standard.

Healthy Living Guide

BMI Dietary Recommendations

  • Underweight (BMI < 18.5): Increase intake of quality protein and healthy fats, moderately increase calorie intake.
  • Normal (BMI 18.5-24.9): Maintain a balanced diet, consume more fresh fruits and vegetables, control refined sugar and processed foods.
  • Overweight (BMI 25.0-29.9): Control total calorie intake, reduce high-sugar and high-fat foods, increase vegetable and fruit intake.
  • Obese (BMI ≥ 30.0): Strictly control calorie intake, avoid high-sugar and high-fat foods, increase protein and dietary fiber intake.

BMI Recommended Exercises

  • Underweight: Focus on strength training, such as dumbbell training, push-ups, etc., supplemented with moderate aerobic exercise.
  • Normal: Balanced aerobic and strength training, such as jogging, swimming, yoga, Pilates, etc.
  • Overweight: Focus on aerobic exercise, such as brisk walking, jogging, swimming, cycling, supplemented with strength training.
  • Obese: Low-impact aerobic exercise, such as swimming, elliptical machine, brisk walking, gradually increasing exercise intensity.

Scientific Weight Loss Guide

  1. Set reasonable goals: 0.5-1kg weight loss per week is appropriate
  2. Balanced diet: Ensure nutritional balance while controlling calories
  3. Regular exercise: At least 150 minutes of moderate-intensity exercise per week
  4. Adequate sleep: 7-8 hours of quality sleep every night
  5. Stress management: Learn to relax, avoid emotional eating
  6. Persistence: Developing a healthy lifestyle takes time