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ADULT HEALTH AWARENESS

BMI Calculator India

Check your BMI from height and weight, with Indian and WHO references. For adults aged 18 and above only.

Your measurements

Not for children or pregnancy. BMI cannot distinguish muscle from body fat; illness, body composition and other factors can affect its usefulness. Discuss individual interpretation with a healthcare professional.

Sex is used only for the optional waist reference. It does not change the BMI formula or adult BMI bands.
Measure midway between your lowest rib and the top of your hip bone after a normal breath out, without tightening the tape. Ask a health professional if unsure.
Input limits

Calculator input limits (not healthy ranges): age 18–120 whole years, height 50–275 cm, weight 10–650 kg, optional waist 40–250 cm. Measurements outside these limits need individual assessment.

Your entries stay in this page’s memory and are not saved by this calculator.

Your BMI

Enter your measurements and calculate. Your BMI and explanation will appear here.

WHO International Reference

The international reference uses different thresholds: overweight starts at 25 and obesity at 30. The Indian reference above uses 23 and 25. These are distinct screening references, not competing diagnoses.

  • Underweight: below 18.5
  • Normal range: 18.5 to below 25
  • Overweight: 25 or above (includes obesity)
  • Obesity: 30 or above

How BMI is calculated

BMI = weight (kg) ÷ [height (m) × height (m)]. Centimetres are divided by 100; one inch equals 2.54 cm and one foot equals 12 inches.

Example: 65 kg and 170 cm gives BMI 22.5, within both reference normal ranges. Age confirms adult use; it does not alter the formula.

Know Your NCD Risk · Optional

Optional reflection — mark topics to discuss or follow up. This is not a clinical score; your selections do not change the result or estimate disease probability.

Frequently asked questions

Why are Indian and WHO results different?

This page uses the cited MoHFW Indian thresholds for its main interpretation and shows the WHO international thresholds separately. Use a professional assessment for personal decisions.

Can someone under 18 use this calculator?

No. Children and adolescents require age-appropriate growth assessment, not these adult categories.

Does a high BMI mean I have diabetes or heart disease?

No. BMI is a screening measure. Blood pressure, tests, health history and professional assessment provide different information.

Is waist measurement required?

No. You can calculate BMI without it. If supplied, it adds a separate waist reference, not a disease diagnosis.

Medical references

References checked 4 September 2026. Worklity is independent and is not affiliated with or endorsed by WHO, MoHFW, NHM or the Government of India.