BMI Calculator
Body Mass Index (BMI) is a simple measure using height and weight to estimate body fat. While not perfect, it's a useful screening tool for weight categories. Enter your measurements to calculate your BMI.
How We Calculate This
BMI is calculated as weight in kilograms divided by height in meters squared. For imperial units: (weight in lbs × 703) ÷ (height in inches)². Categories follow CDC guidelines.
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
Is BMI accurate?
BMI is a useful screening tool but has limitations. It doesn't account for muscle mass, bone density, age, or fat distribution. Athletes may have high BMI but low body fat.
Should I use BMI as my health measure?
BMI is one of many health indicators. Waist circumference, body fat percentage, blood pressure, cholesterol, and blood sugar are also important. Consult a healthcare provider for a complete assessment.
How is BMI calculated?
BMI = weight (kg) ÷ height (m)². In imperial units: BMI = (weight in pounds × 703) ÷ (height in inches)².
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