A BMI calculator is a free online tool that gives you instant results without any signup or fees. It covers body mass index, BMI chart, healthy weight and more — all in one place.
BMI Calculator India (ICMR Standards)
This BMI calculator uses ICMR guidelines for India: normal 18.5-22.9, overweight 23-27.4, obese 27.5+. WHO uses different cutoffs — 25 for overweight, 30 for obese.
BMI Formula
BMI = weight in kg divided by height in metres squared. Example: 70 kg and 1.70 m gives BMI = 70 / (1.70 x 1.70) = 24.2. Use the BMI calculator above for instant results.
BMI Chart for Adults India 2026
Below 18.5: underweight. 18.5-22.9: normal (ICMR). 23-27.4: overweight (ICMR). 27.5+: obese (ICMR). 30+: severely obese. Indians have higher health risk at lower BMI than Western populations.
BMI Calculator in kg and cm
Enter weight in kg and height in cm directly. The calculator converts cm to metres automatically. No need to calculate manually — results appear instantly.
Is BMI Accurate for Indians?
ICMR recommends lower cutoffs for Indians because South Asians carry more abdominal fat at the same BMI. A BMI of 23 carries diabetes risk in Indians that WHO associates with BMI 25.
Frequently Asked Questions
What is a healthy BMI for Indian adults?
ICMR guidelines set healthy BMI for Indian adults at 18.5 to 22.9. Overweight starts at 23 and obese at 27.5. These are lower than WHO global standards because Indians have higher metabolic risk at lower BMI values.
How to calculate BMI?
BMI = weight in kilograms divided by height in metres squared. If you weigh 65 kg and are 1.65 m tall: BMI = 65 / (1.65 x 1.65) = 23.9. The BMI calculator above does this automatically.
What does BMI 25 mean for an Indian?
BMI 25 puts an Indian adult in the obese category by ICMR standards. It is above the Indian overweight threshold of 23. At BMI 25, risk of Type 2 diabetes and cardiovascular disease is meaningfully elevated for South Asians.
Can BMI be wrong for muscular people?
Yes. BMI does not distinguish between muscle and fat. A person with high muscle mass may show overweight BMI but have low body fat. For muscular people, check waist circumference alongside BMI — men under 90 cm and women under 80 cm.
What is the BMI calculator formula for children?
Children use age and sex specific BMI percentile charts, not fixed cutoffs. A BMI of 21 may be normal for a 10 year old but low for a 16 year old. The BMI calculator on this page is for adults only.