📖 What is BMI?
BMI (Body Mass Index) is a measurement that uses your height and weight to estimate whether you have a healthy body weight. It is calculated by dividing your weight in kilograms by the square of your height in meters. BMI is widely used by doctors, dietitians and health professionals as a quick screening tool.
While BMI is a useful indicator, it is not a perfect measure of health. It does not account for muscle mass, bone density, age, or body fat distribution. Athletes may have a high BMI due to muscle, while older adults may have a normal BMI but high body fat.
📊 BMI Categories (WHO Standard)
- Below 18.5 — Underweight: May indicate malnutrition or other health issues
- 18.5 to 24.9 — Normal Weight: Healthy range for most adults
- 25.0 to 29.9 — Overweight: Increased risk of heart disease, diabetes
- 30.0 and above — Obese: Significantly increased health risks
🇮🇳 BMI for Indians
The WHO recommends lower BMI cutoffs for South Asian populations including Indians. For Indians:
- Below 18.5 — Underweight
- 18.5 to 22.9 — Normal (stricter than global standard)
- 23.0 to 24.9 — Overweight risk
- 25.0 and above — Obese risk
💪 How to Achieve a Healthy BMI
- Aim for 30 minutes of moderate exercise (brisk walking, cycling) 5 days a week
- Eat a balanced diet with vegetables, pulses, whole grains and lean protein
- Reduce refined carbohydrates, sugar, and processed foods
- Stay hydrated — drink 8-10 glasses of water daily
- Get 7-8 hours of quality sleep every night
- Consult a doctor or dietitian for personalized advice
❓ Frequently Asked Questions
Is BMI accurate for children?
No. This calculator is for adults (18 years and older). Children and teenagers use a different BMI-for-age calculation that takes into account growth patterns. Consult a pediatrician for children's weight assessment.
Is BMI 25 overweight for Indians?
For Indians and other South Asians, health risks increase at a lower BMI compared to Western populations. Many Indian health guidelines use BMI 23 as the overweight cutoff rather than 25.
Can I have a high BMI but be healthy?
Yes. Athletes and people with high muscle mass can have a BMI in the overweight range but be perfectly healthy. BMI should be considered alongside other measures like waist circumference, body fat percentage, and blood tests.