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BMI Calculator

BMI Calculator

Check your Body Mass Index (BMI) instantly. A simple screening tool for weight categories.

Basic Info

Body Measurements (Optional, for Body Fat & WHR)

πŸ’‘ Enter Neck, Waist (and Hips) to unlock Body Fat % and Waist-to-Hip Ratio.

πŸ”₯ Energy Expenditure

Basal Metabolic Rate (BMR)1345 kcal
Daily Energy Expenditure (TDEE)2085 kcal

βš–οΈ Weight Analysis

BMI
22
ε₯康體重
Ideal Weight Range
~ 56.9 kg

πŸ“ Body Composition

πŸ”’
Enter measurements
to unlock Body Fat

Specialized Versions

BMR & TDEE Calculator
BMR & TDEE
Body Fat Calculator (Navy Method)
Body Fat (Navy Method)
Waist-to-Hip Ratio Calculator
Waist-to-Hip Ratio
Ideal Weight Calculator
Ideal Weight

What is BMI?

BMI (Body Mass Index) is a simple calculation using a person's height and weight. The formula is BMI = kg/mΒ². It is used worldwide as a screening tool for overweight and obesity.

Limitations of BMI

BMI does not distinguish between muscle and fat.
  • Athletes: A bodybuilder may have a high BMI ("Obese") but very low body fat.
  • Skinny Fat: An elderly person may have a "Normal" BMI but low muscle mass and high body fat.

BMI Categories (WHO)

  • Underweight: < 18.5
  • Normal weight: 18.5 – 24.9
  • Overweight: 25 – 29.9
  • Obesity: 30 or greater

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