everyday-health Verified Precision Tool
BMI Calculator (Body Mass Index)
Calculate your Body Mass Index (BMI) and BMI Prime value with official weight classification categories.
Mathematical Formula
BMI = weight (kg) / (height (m))^2
Overview & Explanation
Body Mass Index (BMI) is a standardized screening metric calculated from height and weight to categorize body mass.
How It Works
- Converts height from cm to meters.
- Squares the height in meters.
- Divides body weight in kg by height squared.
Practical Applications
- Health screening.
- Fitness baseline assessment.
- Weight management tracking.
70 kg at 175 cm
Calculate BMI for an adult weighing 70 kg and 175 cm tall.
1
Convert height to meters
175 / 100
= 1.75 m
2
Square the height
1.75 * 1.75
= 3.0625 m²
3
Divide weight by height squared
70 / 3.0625
= 22.86 kg/m² (Normal weight)
Frequently Asked Questions
What is a healthy BMI range for adults?
A normal BMI range according to the World Health Organization is 18.5 to 24.9 kg/m².
Does BMI distinguish between muscle and body fat?
No, BMI calculates overall weight relative to height and does not directly measure body fat or muscle mass percentage.
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