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Body Mass Index (BMI) & Ideal Weight Calculator

Check your Body Mass Index (BMI) according to World Health Organization (WHO) and Asian-specific health guidelines. Includes healthy weight targets.

Body Measurements

Weight (kg)75 kg
Height (cm)178 cm
Body Mass Index (BMI)
23.7
Normal Weight
18.5 Under25.0 Normal30.0 Over40.0 Obese
Healthy Weight Target:58.6 - 78.9 kg
Asian Health Standard:Overweight
BMI Prime Ratio:0.95 (1.0 = Max Normal)

Mathematical Formula: Quetelet BMI Index

BMI = Weight (kg) / [Height (m)]²

A screening metric based on mass and height to categorize body weight status.

How to Use This Calculator

  1. 1Select Metric (kg, cm) or Imperial (lbs, feet & inches) unit system.
  2. 2Enter your weight and height.
  3. 3View your BMI score, WHO classification, Asian guidelines classification, and healthy ideal weight range.

Practical Example: Adult Male BMI Example

Scenario: Height: 5 ft 10 in (178 cm), Weight: 165 lbs (74.8 kg).

Height:178 cm
Weight:74.8 kg
Result: BMI: 23.6 | Category: Normal Weight (Healthy) | Ideal Range: 58.6 kg - 78.9 kg

A BMI of 23.6 falls comfortably inside the 18.5 - 24.9 healthy weight range.

Frequently Asked Questions

For most adults, a healthy BMI is between 18.5 and 24.9. For Asian populations, the recommended cutoff for overweight is lower at 23.0.

Pro Calculation Tips
  • Combine your BMI score with waist circumference or body fat percentage for a more holistic health evaluation.
Model Assumptions
  • BMI does not distinguish between muscle mass and fat mass. Bodybuilders and elite athletes may register as overweight or obese despite low body fat.
  • This tool is for informational screening and is not a medical diagnosis.