BMI chart for men and women: what your number actually means
Body mass index is weight divided by height squared — a screening number designed for populations, applied to individuals. It is useful as a first look and misleading when treated as a verdict on health. The two things worth knowing are the category boundaries, which differ for South Asian bodies, and the situations where BMI is simply the wrong tool.
How BMI is calculated
BMI = weight in kilograms ÷ (height in metres)². Someone who is 168 cm and 68 kg has a BMI of 68 ÷ (1.68 × 1.68) = 24.1.
The formula is identical for men and women. Adult categories are also shared — the differences people expect between sexes show up in body-fat percentage, not in BMI thresholds.
WHO categories for adults
The international classification used in most health reporting.
- Below 18.5 — underweight
- 18.5 to 24.9 — normal weight
- 25.0 to 29.9 — overweight
- 30.0 and above — obesity
Indian and South Asian cut-offs
Cardiometabolic risk in South Asian populations rises at a lower body mass, so Indian guidance shifts the thresholds down. This is why a BMI of 24 can be reported as 'normal' by one calculator and 'overweight' by another.
- Below 18.5 — underweight
- 18.5 to 22.9 — normal
- 23.0 to 24.9 — overweight
- 25.0 and above — obesity
Height and weight reference table
Approximate weight ranges for the Indian 'normal' band of 18.5–22.9, rounded to the nearest kilogram. Use it as orientation, not as a target to force.
- 150 cm — 42 to 51 kg
- 155 cm — 44 to 55 kg
- 160 cm — 47 to 58 kg
- 165 cm — 50 to 62 kg
- 170 cm — 53 to 66 kg
- 175 cm — 57 to 70 kg
- 180 cm — 60 to 74 kg
- 185 cm — 63 to 78 kg
What BMI cannot see
BMI knows your mass, not its composition or distribution. A 90 kg rugby player and a 90 kg sedentary adult of the same height share a BMI and almost nothing else metabolically.
- It does not distinguish muscle from fat, so trained people read high
- It ignores fat distribution, and abdominal fat carries most of the risk
- It is unreliable during pregnancy, for children and adolescents, and for older adults losing muscle
- It says nothing about blood pressure, lipids, glucose or fitness
What to use alongside it
Waist circumference is the single most useful companion measure — above roughly 90 cm for Indian men and 80 cm for Indian women is generally treated as raising cardiometabolic risk. A body-fat estimate and simple fitness markers add more.
Fitholae's BMI calculator reports both cut-off sets and a healthy weight range for your height; the body-fat calculator and fitness score cover the parts BMI is blind to.
If your BMI is outside the healthy range
Above the range, a modest calorie deficit plus two to three resistance sessions a week is the pattern that loses fat while protecting muscle. Below the range, a small calorie surplus with adequate protein and progressive training is the equivalent.
BMI is screening information, not a diagnosis, and this article is general fitness information rather than medical advice. Discuss a result that concerns you — in either direction — with a doctor. See the Fitholae medical disclaimer.
Frequently asked questions
Is the BMI chart different for men and women?
No. Adult BMI categories are the same; body-fat reference ranges are what differ by sex.
What BMI is considered healthy in India?
Indian guidance treats 18.5 to 22.9 as the normal band, with overweight starting at 23.
Why is my BMI high when I look lean?
Muscle weighs the same as fat per kilogram, so muscular people commonly read overweight on BMI. Use body-fat percentage and waist measurement instead.
Is BMI useless then?
No — it is a cheap, reasonable population screen. It is just a poor sole judge of an individual.
Sources & references
- Obesity and overweight fact sheet — World Health Organization
- Dietary and health guidance for Indians — ICMR – National Institute of Nutrition
- Assessing your weight and BMI — US Centers for Disease Control and Prevention
Reviewed for accuracy. Category thresholds checked against WHO classifications and Indian/South Asian cut-offs. Read how we write and check content in our editorial policy.
General information, not medical advice. Fitholae provides fitness and nutrition education and does not diagnose, treat or replace care from a qualified professional. If you are pregnant, under 18, or managing a health condition, speak to a doctor or registered dietitian before acting on anything here. See our medical disclaimer.