BMI Calculator
Calculate your Body Mass Index (BMI) to assess your weight status. BMI is a measure of body fat based on height and weight.
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on your height and weight. It's calculated by dividing your weight in kilograms by the square of your height in meters. BMI provides a simple numeric measure that helps categorize weight status.
While BMI is a useful screening tool, it doesn't directly measure body fat. It's important to note that BMI may not be accurate for everyone, especially athletes with high muscle mass or older adults who may have lost muscle mass.
BMI Categories
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 - 24.9 | Normal weight |
| 25.0 - 29.9 | Overweight |
| 30.0 and above | Obese |
How to Use the BMI Calculator
- Choose unit system: Select metric (cm and kg) or imperial (feet/inches and pounds).
- Enter your height: Input your height in the selected unit system.
- Enter your weight: Input your weight in the selected unit system.
- Calculate: Click the "Calculate BMI" button to get your BMI and category.
- Interpret results: Review your BMI category and consult with a healthcare professional if needed.
Frequently Asked Questions
Is BMI accurate for everyone?
BMI is a useful screening tool but may not be accurate for athletes with high muscle mass, pregnant women, or older adults. It doesn't distinguish between muscle and fat mass.
What should I do if my BMI is high?
If your BMI indicates you're overweight or obese, consult with a healthcare professional. They can help you develop a safe and effective plan for weight management that includes diet and exercise.
Can children use this calculator?
BMI calculations for children and teens are interpreted differently than for adults, as they account for age and sex. This calculator is designed for adults. Consult a pediatrician for children's BMI assessment.
Should I consult a doctor about my BMI?
While BMI is a useful tool, it's not a substitute for professional medical advice. If you have concerns about your weight or BMI, consult with a healthcare professional for personalized guidance.
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<p>Calculator: <a href="https://onlinecalculator.co.uk/health/bmi-calculator" target="_blank">BMI Calculator</a> - OnlineCalculator.co.uk</p>APA Style Citation:
OnlineCalculator.co.uk. (2025). BMI Calculator. Retrieved from https://onlinecalculator.co.uk/health/bmi-calculatorNote: This calculator is free to use and reference. No permission required for educational or commercial citation.