Picsova

BMI Calculator

Calculate your Body Mass Index in metric or imperial units and see which BMI category you fall into. Nothing is stored or sent anywhere.

Runs entirely in your browser. Nothing is uploaded.

Your BMI

22.9

Normal

BMI is a rough screening tool and doesn't account for muscle, age, or body composition.

Body Mass Index, metric or imperial

Body Mass Index is a single number derived from height and weight, used as a rough population-level screening figure. This calculator takes either metric or imperial units, gives you the value, and shows which standard category it falls into. It is a starting point for a conversation rather than a diagnosis, and because the calculation happens in your browser, the numbers you enter are never transmitted or stored.

How to calculate your BMI

  1. 1

    Choose your units

    Switch between metric (centimetres and kilograms) and imperial (feet, inches, pounds).

  2. 2

    Enter height and weight

    The BMI value is calculated immediately as you type.

  3. 3

    See the category

    The result is placed against the standard World Health Organization ranges.

Good to know

  • Metric BMI is weight in kilograms divided by height in metres squared; the imperial form applies a conversion factor to pounds and inches.
  • The standard adult ranges are: under 18.5 underweight, 18.5 to 24.9 normal, 25 to 29.9 overweight, and 30 or above obese.
  • BMI does not distinguish muscle from fat and takes no account of build, age, or where weight is carried, so athletes and older adults are often misclassified by it.
  • Different reference ranges apply to children and adolescents, and this calculator uses the adult ranges.
  • This is general information, not medical advice — talk to a doctor or dietitian about what your number means for you.

What people use it for

  • Converting a height and weight into the BMI figure a form is asking for
  • Checking a number quoted at a check-up in the units you actually think in
  • Comparing metric and imperial inputs without doing the conversion by hand

Frequently asked questions

Does it support imperial units?+

Yes. Toggle between metric (cm / kg) and imperial (inches / lb).

Is BMI an accurate health measure?+

BMI is a quick screening tool and doesn't account for muscle mass, age, or body composition. Treat it as a rough guide only.

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