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Free health tool

BMI Calculator

Find out where your weight stands in seconds — with cut-offs made for Indian bodies, your healthy weight range and a clear next step.

  • Indian & WHO standards
  • Instant, live result
  • Healthy weight for your height

Your details

Units
BMI standard
GenderOptional
AgeYears
Height120 – 220 cm
Weight30 – 150 kg

Your result updates as you type. Nothing you enter leaves your device.

Your BMI shows up here

Enter your height and weight — your result, healthy weight range and next step update instantly.

18.52325

BMI Reference Chart

Run your finger across from your height to your weight to see where you land — no maths needed. Colours follow the standard you pick.

  • UnderweightBelow 18.5
  • Healthy18.5 – 22.9
  • Overweight23 – 24.9
  • Obese25 & above
Height ↓ / Weight →40kg45kg50kg55kg60kg65kg70kg75kg80kg85kg90kg95kg100kg105kg110kg115kg120kg
4'10"147 cm1821232528303235373941444648515355
5'0"152 cm1719222426283032343739414345475052
5'2"157 cm1618202224262830323436384042444648
5'4"163 cm1517192123252628303234363840424445
5'6"168 cm1416182021232527283032343637394143
5'8"173 cm1315171820222325272830323435373940
5'10"178 cm1314161719212224252728303233353638
6'0"183 cm1213151618192122242527283031333436
6'2"188 cm1113141617182021232425272830313334
6'4"193 cm1112131516171920212324252728303132

Scroll sideways on mobile. Values are rounded — use the calculator above for your exact BMI.

Know Your Range

Research shows South Asians tend to carry more body fat — especially around the waist — than Europeans at the same BMI, and face higher risk of diabetes and heart disease sooner. That's why the WHO Asia-Pacific guidance used in India sets lower cut-offs than the global scale.

Underweight

IndianBelow 18.5
WHO globalBelow 18.5

Too little stored energy can mean low muscle, weaker immunity and constant fatigue.

Healthy

Indian18.5 – 22.9
WHO global18.5 – 24.9

The range linked with the lowest risk of lifestyle disease for most adults.

Overweight

Indian23 – 24.9
WHO global25 – 29.9

An early warning zone — the best time to tighten up habits before risk climbs.

Obese

Indian25 & above
WHO global30 & above

Strongly linked with diabetes, high blood pressure and heart disease.

How BMI Is Calculated

  1. 01

    Measure your height

    Stand straight against a wall without shoes and convert the reading to metres (172 cm = 1.72 m).

  2. 02

    Square it

    Multiply your height in metres by itself: 1.72 × 1.72 = 2.96.

  3. 03

    Divide your weight

    Divide your weight in kilograms by that number: 70 ÷ 2.96 = 23.7. That's your BMI.

Pick your formula

Different units, same answer — every formula lands on the same BMI.

  • Metres & kilogramsBMI = weight (kg) ÷ height (m)²
  • Centimetres & kilogramsBMI = weight (kg) ÷ height (cm)² × 10,000
  • Inches & poundsBMI = 703 × weight (lb) ÷ height (in)²
Same person, two verdicts

23.7

Arjun is 172 cm and 70 kg. On the WHO scale he's comfortably healthy. On the Indian scale he's already overweight — an early nudge to watch his waistline before risk builds up.

BMI at Every Age

2 – 17 years

Children & teens

The maths is the same, but the result is plotted on age- and sex-specific growth charts (in India, the IAP charts) because body fat changes naturally while kids grow. Adult categories don't apply.

18 – 64 years

Adults

Standard categories apply. For Indian adults, the lower Asia-Pacific cut-offs give a more accurate picture of health risk than the global ones.

65+ years

Older adults

Muscle naturally declines with age, so BMI can look healthy while strength drops. Focus on protein, resistance training and mobility — and let your doctor interpret your number.

Is BMI the Whole Story?

BMI is a brilliant first check, not a final verdict. Here's what it gets right, where it falls short, and what to measure alongside it.

Where BMI shines

  • Takes seconds and needs only a tape and a scale
  • Reliable for screening large groups of people
  • Great for tracking your own trend over months
  • Flags weight-related risk early

Where it falls short

  • Can't tell muscle from fat — lifters often read high
  • Ignores where fat is stored, like around the belly
  • Doesn't account for bone density or body frame
  • Not meant for pregnancy, children or the very elderly

Pair it with

Waist circumference

For Indian adults, aim for under 90 cm (men) or 80 cm (women), measured at the navel.

Waist-to-height ratio

Keep your waist under half your height. A ratio below 0.5 is a simple, strong health signal.

Body fat percentage

A smart scale or DEXA scan shows how much of your weight is fat versus lean mass.

BMI Questions, Answered

Still unsure what your number means? Drop by either of our Sirsa stores — our team is happy to talk goals, diet and supplements.

Find a store

Turn your number into a plan

Pick the goal that fits your result and shop genuine supplements hand-picked for it.

This calculator is for general information only and isn't a medical diagnosis. Speak with a qualified doctor or dietitian before making major changes to your diet or training.