BMI & Ideal Weight Calculator • ශරීර ස්කන්ධ දර්ශකය (BMI) සහ නිරෝගී බර
Check your Body Mass Index (BMI), South Asian WHO health classifications, ideal body weight range, and tailored lifestyle advice based on height and weight.
Body Measurements (මිනුම්)
Enter height and weight values
Body Mass Index (BMI)
Normal Weight • නිරෝගී සාමාන්‍ය බර මට්ටම
නිරෝගී සාමාන්‍ය බර මට්ටම
ඔබ පවතින්නේ නිරෝගී බර මට්ටමකය. සමබර ආහාර රටාවක් සහ ක්‍රියාශීලී දිවිපෙවෙතක් පවත්වාගෙන යමින් මෙය රැක ගැනීමට උත්සාහ කරන්න.
WHO & Asian BMI Classification Standards (ශරීර ස්කන්ධ දර්ශක වර්ගීකරණය)
Due to higher risk of cardiovascular illness and diabetes at lower weight thresholds, Sri Lankan adults are advised to follow the Asian BMI cut-offs rather than Western metrics.
| Category | Asian BMI Range (Sri Lanka) | WHO Global Range | Health Risk Indicator |
|---|---|---|---|
| Underweight (අඩු බර) | < 18.5 kg/m² | < 18.5 kg/m² | Nutritional deficiency risk |
| Normal Weight (නිරෝගී සාමාන්‍ය බර) | 18.5 – 22.9 kg/m² | 18.5 – 24.9 kg/m² | Lowest risk profile |
| Overweight (වැඩි බර) | 23.0 – 27.4 kg/m² | 25.0 – 29.9 kg/m² | Moderate cardiovascular risk |
| Obese (ස්ථුලතාවය) | ≥ 27.5 kg/m² | ≥ 30.0 kg/m² | High hypertension & diabetes risk |
Frequently Asked Questions • නිතර අසන ප්‍රශ්න
What is the formula for calculating Body Mass Index (BMI)?
The standard metric formula for BMI is weight in kilograms divided by the square of height in meters: BMI = weight (kg) / (height (m) × height (m)). For example, an individual weighing 65 kg with a height of 170 cm (1.70 m) has a BMI of 65 / (1.70 × 1.70) = 22.5 kg/m².
Why are BMI cut-off values lower for South Asians and Sri Lankans?
The World Health Organization (WHO) and Ministry of Health Sri Lanka recognize that South Asian populations have higher body fat percentages and elevated cardiovascular risk at lower BMI levels compared to Caucasians. In South Asia, overweight begins at BMI 23.0 kg/m² (vs 25.0 globally), and obesity begins at BMI 27.5 kg/m² (vs 30.0 globally).
What is considered a healthy BMI for adults?
Under the Asian BMI standard, a healthy normal weight range is between 18.5 and 22.9 kg/m². Under the global WHO standard, normal weight spans from 18.5 to 24.9 kg/m².
How can I calculate my ideal body weight based on my height?
Your ideal body weight corresponds to a BMI between 18.5 and 22.9 kg/m². For example, for a person of 165 cm (1.65 m), the healthy weight range is (1.65 × 1.65 × 18.5) = 50.4 kg to (1.65 × 1.65 × 22.9) = 62.3 kg.
World Health Organization (WHO) BMI Classifications
Body Mass Index (BMI) evaluates body weight relative to height squared. While a useful general screening tool, it does not directly measure muscle mass versus body fat distribution.
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