BMI Calculator

Calculate your Body Mass Index (BMI) using metric or imperial units. Instant results — no data stored.

Advertisement
Ad Space Reserved

Enter Your Details

cm
kg

Your result will appear here

Enter your height and weight, then hit Calculate.

Advertisement
Ad Space Reserved
Reference

BMI Categories

Standard classification by the World Health Organization (WHO)

Underweight
Below 18.5

May indicate nutritional deficiency or other health concerns. Consider speaking with a healthcare professional.

Normal Weight
18.5 – 24.9

Associated with the lowest health risk. Maintain a balanced diet and regular physical activity.

Overweight
25 – 29.9

Slightly elevated risk for certain conditions. Lifestyle changes like diet and exercise can help.

Obese
30 and above

Higher risk for cardiovascular disease, diabetes, and other conditions. Medical guidance is recommended.

Disclaimer: BMI is a screening tool, not a diagnostic measure. It does not account for muscle mass, bone density, age, or sex differences. Always consult a qualified healthcare professional for medical advice.

FAQ

Common Questions

How is BMI calculated?
BMI is calculated by dividing your weight (in kilograms) by the square of your height (in metres): BMI = kg / m². In imperial units: BMI = (lbs / inches²) × 703. This calculator handles both formulas automatically based on your selected unit system.
Is BMI accurate for everyone?
BMI is a useful population-level screening tool but has limitations for individuals. It can overestimate body fat in athletes with high muscle mass and underestimate it in older adults who have lost muscle. It also doesn't account for fat distribution, which is a key risk factor.
Is my data saved or shared?
No. All calculations happen entirely in your browser using JavaScript. Your height and weight values are never sent to any server or stored anywhere.
Advertisement
Ad Space Reserved