BMI Formula:
From: | To: |
Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. BMI provides a reliable indicator of body fatness for most people.
The calculator uses the standard BMI formula:
Where:
Explanation: BMI compares your weight to your height to estimate whether you're underweight, normal weight, overweight, or obese.
Details: BMI is used to screen for weight categories that may lead to health problems. It's a simple, inexpensive method of screening for weight categories.
Tips: Enter your weight in kilograms and height in meters. For pounds and inches, convert first (1 kg = 2.2 lbs, 1 m = 39.37 inches).
Q1: What is a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
Q2: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes (muscle weighs more than fat), pregnant women, children, or the elderly.
Q3: How often should I check my BMI?
A: For most adults, checking every 6-12 months is sufficient unless you're actively trying to lose or gain weight.
Q4: What should I do if my BMI is too high?
A: Consult your doctor about healthy weight loss strategies including diet and exercise changes.
Q5: Does BMI differ for men and women?
A: The same BMI ranges apply to both men and women, though body composition differs between genders.