SuperCalc

What's My BMI?

What's your BMI? Enter your height and weight below and find out instantly. Your result includes the raw BMI number, the WHO category it belongs to, a color-coded visual gauge from underweight to obese, the healthy weight range for your height, and your BMI Prime (how your BMI compares to the upper boundary of normal). Toggle between metric and imperial units at the top.

BMI Calculator

Enter your height and weight to calculate your Body Mass Index.

cm
kg

BMI Categories

WHO classification of Body Mass Index ranges.

CategoryBMI Range
Underweight
< 18.5
Normal
18.5 – 24.9
Overweight
25 – 29.9
Obese I
30 – 34.9
Obese II
35 – 39.9
Obese III
40+

Frequently Asked Questions

What's a good BMI?
A 'good' BMI is typically 18.5–24.9 (the normal range). Within this, research suggests BMI 20–25 carries the lowest health risk. But 'good' is relative — a BMI of 26 in a muscular, active person may be healthier than a BMI of 22 in a sedentary person with poor metabolic health.
My BMI is 27. Is that bad?
A BMI of 27 is in the overweight range (25–29.9). It's not alarming — many people at this BMI are healthy, especially if they exercise and have normal blood pressure and blood sugar. It is a signal to be mindful of trends: if your BMI has been rising, it's worth taking steps to stabilize or reduce it.
Does BMI matter if I exercise regularly?
BMI matters less for very active people because it doesn't distinguish muscle from fat. However, it still provides a useful baseline. Even athletes should be aware of their BMI — and if it's elevated, verify with body fat measurement that the weight is lean mass, not excess fat.

Medical disclaimer: BMI is a screening tool, not a medical diagnosis. It does not measure body fat directly and does not account for muscle mass, bone density, age, sex, or ethnicity. Consult a healthcare provider for personalized health advice.

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