โค๏ธ Health
BMI Calculator
Calculate your Body Mass Index (BMI) in metric (kg/cm) or imperial (lbs/ft) units and see which BMI category you fall into.
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Formula
BMI = weight (kg) / heightยฒ (mยฒ)weight- Body weight in kilograms
height- Height in meters (e.g. 1.75 for 175 cm)
Example
Calculating BMI
Find the BMI for a person who is 1.75m tall and weighs 70kg.
- Square the height: 1.75 ร 1.75 = 3.0625.
- Divide weight by the squared height: 70 / 3.0625 = 22.857...
- Result: BMI is 22.9 (Normal weight).
Frequently Asked Questions
A BMI between 18.5 and 24.9 is considered healthy for most adults. Below 18.5 is underweight; 25โ29.9 is overweight; 30+ is obese.
BMI is a useful screening tool but does not directly measure body fat. Athletes may have a high BMI due to muscle mass. Consult a healthcare professional for a full assessment.
Multiply feet by 30.48 and add inches multiplied by 2.54. For example, 5'9" = (5 ร 30.48) + (9 ร 2.54) = 175.26 cm.
Authoritative References & Standards
- Body Mass Index (BMI) Classifications โWorld Health Organization (WHO)
International standards and diagnostic criteria for underweight, normal weight, overweight, and obesity.
- Assessing Your Weight and Health Risk โU.S. Centers for Disease Control and Prevention (CDC)
Clinical guidelines on BMI interpretation and associated health indicators.