BMI Calculator Online
Calculate your BMI (Body Mass Index) and get a comprehensive health score. Supports both metric and imperial units with personalized recommendations based on gender and exercise frequency.
How to Calculate Your BMI and Health Score
- 1
Select Your Gender
Choose male or female to get appropriate default values and gender-specific health recommendations.
- 2
Choose Unit System
Select between metric (kg/cm) or imperial (lbs/ft-in) units based on your preference.
- 3
Enter Your Measurements
Input your current weight and height. The calculator automatically updates as you type.
- 4
Set Exercise Frequency
Use the slider to indicate how many days per week you exercise to calculate your comprehensive health score.
Key Features
Accurate BMI Calculation
Calculate your Body Mass Index using the standard formula with support for both metric (kg/cm) and imperial (lbs/ft-in) units.
Health Score Assessment
Get a comprehensive health score out of 100 based on your BMI and exercise frequency for a complete wellness overview.
Gender-Specific Defaults
Smart defaults based on gender selection with automatic adjustment of typical weight and height values.
Visual Charts & Analytics
Interactive doughnut charts display your BMI and health score with color-coded categories for easy understanding.
What is BMI and Health Score?
BMI (Body Mass Index) is a measure of body fat based on height and weight that applies to adult men and women. Our calculator also provides a health score that combines your BMI with exercise frequency to give you a more comprehensive view of your overall health status. The health score ranges from 0-100, with higher scores indicating better health metrics.
Why Use Our BMI Calculator?
- 1
Comprehensive Analysis
Get both BMI calculation and health score assessment in one tool for a complete health overview.
- 2
Dual Unit Support
Works with both metric and imperial units, automatically converting measurements for accurate calculations.
- 3
Real-time Updates
Instant calculations as you type with visual charts that update dynamically to show your results.
- 4
Privacy Protected
All calculations are performed locally in your browser - no personal health data is stored or transmitted.
Frequently Asked Questions
What BMI categories are used in the calculator?
The calculator uses standard BMI categories: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obesity Class I (30-34.9), Class II (35-39.9), and Class III (≥40).
How is the health score calculated?
The health score starts at 100 and adjusts based on your BMI deviation from the healthy range, plus or minus points based on your exercise frequency (0-7 days per week).
Can I use both metric and imperial units?
Yes, you can switch between metric (kg/cm) and imperial (lbs/ft-in) units. The calculator automatically converts and recalculates your BMI.
Is BMI accurate for everyone?
BMI is a useful screening tool but may not be accurate for athletes with high muscle mass, elderly individuals, or certain ethnic groups. Consult healthcare professionals for personalized advice.
What's considered a healthy BMI range?
A healthy BMI range is typically 18.5-24.9. However, optimal BMI can vary based on age, muscle mass, bone density, and other individual factors.
How does exercise frequency affect my health score?
Exercise frequency (0-7 days per week) adjusts your health score by up to ±10 points. Regular exercise (3-5 days per week) is considered optimal for health benefits.