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BMI Calculator

Check your Body Mass Index. Supports cm and feet-inches, with India-specific Asian BMI cutoffs.

How to use this calculator
  1. 1

    Enter weight

    Enter your weight in kilograms using the slider.

  2. 2

    Enter height

    Enter height in centimeters or switch to feet/inches mode.

  3. 3

    View BMI and category

    See your BMI value with both WHO and India-specific Asian BMI categories.

kg
Height
cm

Your BMI

BMI24.2
WHO CategoryNormal
Asian/India CategoryOverweight

BMI Categories (Asian/India cutoffs)

UnderweightBelow 18.5
Normal18.5 – 22.9
Overweight23.0 – 24.9
Obese I25.0 – 29.9
Obese II30.0 – 34.9
Obese III35.0+

BMI = weight (kg) / height² (m²). Asian BMI cutoffs are lower than WHO standards because health risks increase at lower BMI for South Asian populations.

Quick answer

BMI = weight (kg) ÷ height² (m²). For Indians, the normal BMI range is 18.5–22.9 (lower than the WHO standard of 18.5–24.9) because health risks start earlier for South Asian populations.

Body Mass Index (BMI) is a simple screening measure that uses height and weight to estimate whether a person is underweight, normal weight, overweight, or obese. For Indians and other South Asians, doctors recommend using Asian BMI cutoffs, which are lower than the standard WHO thresholds, because metabolic risks like diabetes and heart disease appear at lower BMI levels in this population.

What is this calculator?

A BMI Calculator computes your Body Mass Index from your weight (in kg) and height (in cm or feet-inches). This calculator shows both the standard WHO BMI category and the India-specific Asian BMI category. Asian cutoffs classify 'overweight' starting at BMI 23 instead of 25, reflecting the higher health risk for South Asians at lower BMI values.

Formula

BMI = Weight (kg) ÷ Height² (m²)

Example: 70 kg, 170 cm → BMI = 70 / (1.7 × 1.7) = 24.2

WHO Categories:
• Underweight: < 18.5
• Normal: 18.5 – 24.9
• Overweight: 25.0 – 29.9
• Obese: ≥ 30.0

Asian/India Categories:
• Underweight: < 18.5
• Normal: 18.5 – 22.9
• Overweight: 23.0 – 24.9
• Obese I: 25.0 – 29.9
• Obese II: 30.0 – 34.9
• Obese III: ≥ 35.0

Example

Person: 75 kg, 165 cm (5'5"). BMI = 75 / (1.65 × 1.65) = 27.5 WHO category: Overweight (25–29.9 range). Asian/India category: Obese I (25–29.9 range). This person would be classified as just 'overweight' by WHO standards but 'Obese I' by Asian standards. Indian doctors would recommend lifestyle changes at this BMI.

Scenario snapshots

Health check preparation

Check BMI before annual health checkup or insurance medical exam.

Fitness goal tracking

Monitor BMI changes as you follow a diet or exercise program.

Decision guide

Choose this when

  • You want a quick screening of weight-for-height status.
  • You need BMI for insurance applications or medical forms.
  • You want to understand where you fall on India-specific BMI categories.

Pick another route when

  • You are a bodybuilder or athlete with high muscle mass (BMI will overestimate fat).
  • You need a precise body fat percentage (use DEXA scan or calipers).
  • You are pregnant or under 18 (different BMI charts apply).

Common mistakes to avoid

  • !Using WHO cutoffs for Indians when Asian cutoffs are more relevant for health risk.
  • !Treating BMI as a definitive health diagnosis rather than a screening tool.
  • !Ignoring waist circumference, which is a better predictor of metabolic risk than BMI alone.

Assumptions and disclaimers

Updated context: 2026

  • Standard BMI formula for adults (18+ years) is used.
  • Asian cutoffs are based on WHO Expert Consultation recommendations for Asian populations.
  • BMI does not measure body fat percentage directly.

In practice (India)

BMI calculator India searches are common among health-conscious individuals, gym-goers, and people preparing for medical or insurance assessments. The Asian BMI cutoffs are especially important because India has one of the highest diabetes rates globally, and elevated risk begins at lower BMI compared to Western populations.

BMI is a screening tool, not a diagnostic measure. It doesn't distinguish between muscle and fat mass. Athletes may have high BMI due to muscle. For a complete health assessment, consult a doctor.

Benefits

  • Instant BMI with both WHO and India-specific Asian categories.
  • Supports both cm and feet-inches height input for convenience.
  • Helps you understand health risk classification relevant to Indian population.
  • Useful for insurance, medical forms, and personal health tracking.

Related calculators and guides

Frequently Asked Questions

Why are BMI cutoffs different for Indians?
South Asians tend to have higher body fat percentage and more abdominal fat at the same BMI compared to Europeans. Health risks like type 2 diabetes and cardiovascular disease start at lower BMI. WHO recommends using Asian cutoffs (overweight at BMI 23, obese at 25) for Asian populations.
What is a healthy BMI for Indians?
For Indians, a healthy BMI is between 18.5 and 22.9 (Asian cutoff). BMI 23–24.9 is overweight, and 25+ is obese by Asian standards. Maintain BMI below 23 for optimal health.
Is BMI accurate for muscular people?
No. BMI does not distinguish between muscle and fat. A muscular person may have a 'overweight' BMI despite being fit. Use body fat percentage or waist-to-hip ratio for better assessment.
How often should I check my BMI?
Check BMI once a month if you're actively trying to lose or gain weight. Otherwise, twice a year is sufficient. Track trends rather than single readings.
Does BMI apply to children?
Children's BMI is calculated the same way but interpreted using age-and-sex-specific percentile charts. This calculator is designed for adults (18+). For children, consult a pediatrician.

BMI is a screening tool, not a diagnostic measure. Consult a healthcare professional for personalized health advice. Asian BMI cutoffs are used as per WHO Expert Consultation for Asian populations.