BMI Calculator
Calculate your Body Mass Index and get health recommendations
What is BMI?
Body Mass Index (BMI) is a simple measurement using your height and weight to work out if your weight is healthy. The BMI calculation divides an adult's weight in kilograms by their height in metres squared.
BMI Categories:
Underweight
BMI less than 18.5
May indicate nutritional deficiencies
Normal weight
BMI 18.5-24.9
Healthy weight range for most adults
Overweight
BMI 25-29.9
May increase health risks
Obese
BMI 30 or greater
Higher risk for health issues
Important Notes
Who should not rely solely on BMI?
- • Athletes and bodybuilders
- • Pregnant or nursing women
- • Elderly people
- • Growing children and teenagers
Additional Considerations
- • Different ethnic groups may have different BMI thresholds
- • BMI doesn't measure body fat distribution
- • Other health indicators should be considered alongside BMI
- • Consult healthcare providers for personalized advice
How to Use
Choose Unit System
Select either Metric (cm/kg) or Imperial (in/lb)
Enter Height
Input your height in the selected unit
Enter Weight
Input your weight in the selected unit
Get Results
Click Calculate to see your BMI and category
Tips for Accurate Results:
- Measure height without shoes
- Weigh yourself in the morning
- Use consistent units
- Round to nearest whole number
Frequently Asked Questions
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is considered healthy for most adults. However, these ranges may vary for different ethnic groups and body types.
How often should I check my BMI?
For most adults, checking BMI every 3-6 months is sufficient. If you're actively trying to change your weight, you might want to check more frequently.
Why might BMI not be accurate for some people?
BMI doesn't distinguish between weight from muscle and weight from fat. Athletes or bodybuilders might have a high BMI but not be overweight.
What should I do if my BMI is outside the healthy range?
Consult with a healthcare provider who can perform additional assessments and provide personalized advice based on your individual circumstances.