BMI Calculator

Body Mass Index with personalized health guidance

Calculate Your BMI

Enter your height and weight to calculate your Body Mass Index

BMI Categories

Underweight
Below 18.5
Healthy Weight
18.5 – 24.9
Overweight
25.0 – 29.9
Obese Class I
30.0 – 34.9
Obese Class II
35.0 – 39.9
Obese Class III
40.0+

About BMI

BMI (Body Mass Index) is calculated by dividing weight (kg) by height squared (m²). It is a widely used screening tool, but it has limitations.

BMI may underestimate health risks in people with low muscle mass (common in older adults) and may overestimate risk in very muscular individuals.

For Nigerian women, research suggests health risks may begin at lower BMI thresholds than Western reference ranges. Waist circumference is also an important indicator.

A healthy waist circumference for women is below 88 cm (35 inches).