Frequently Asked Questions
Get answers to common questions about BMI and our calculator
What is BMI?
BMI stands for Body Mass Index. It's a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in metres squared.
How do I calculate my BMI?
You can calculate your BMI by dividing your weight in kilograms by your height in meters squared. For example, if you weigh 70kg and are 1.75m tall, your BMI would be 70 ÷ (1.75 × 1.75) = 22.9. Our calculator does this automatically for you.
What is a healthy BMI range?
A healthy BMI range is typically between 18.5 and 24.9. BMI below 18.5 is considered underweight, 25-29.9 is overweight, and 30 or above is considered obese. However, BMI is just one indicator of health and should be used alongside other factors.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat mass, so athletes with high muscle mass may have high BMI despite being healthy. It also doesn't account for age, ethnicity, or body composition. Consult healthcare professionals for comprehensive health assessment.
Can I use this BMI calculator for children?
This calculator is designed for adults (18+ years). Children and teenagers have different BMI charts and interpretations. For pediatric BMI calculations, please consult with a healthcare provider or use age-appropriate BMI calculators.
How often should I check my BMI?
BMI can be checked periodically, but it's not necessary to check it daily. Monthly or quarterly checks are sufficient for most people. Focus more on overall health habits like regular exercise, balanced nutrition, and regular health check-ups with your doctor.
What should I do if my BMI is in the overweight or obese range?
If your BMI indicates overweight or obesity, consider consulting with healthcare professionals. They can help create a personalized plan that may include dietary changes, increased physical activity, and other lifestyle modifications. Remember, BMI is just one indicator of health.
Is this BMI calculator free to use?
Yes, our BMI calculator is completely free to use. There are no hidden fees, registration requirements, or limitations. You can use it as many times as you want without any cost.
Can I use this calculator on my mobile device?
Absolutely! Our BMI calculator is fully responsive and works perfectly on all devices including smartphones, tablets, and desktop computers. The interface automatically adjusts to your screen size for the best user experience.
What units does the calculator support?
Our calculator supports both metric and imperial units. You can input your weight in kilograms or pounds, and your height in centimeters, meters, or feet and inches. The calculator will automatically convert and calculate your BMI accordingly.
Still have questions?
If you didn't find the answer you were looking for, feel free to contact us or consult with a healthcare professional for personalized advice about your health and BMI.