How to calculate BMI?
To calculate your BMI, simply divide your weight in kilograms by your height in meters squared. For example, a person weighing 70 kg and 1.75 m tall has BMI = 70 / (1.75 × 1.75) = 22.86 kg/m². After calculating your BMI, you can use our Basal Metabolic Rate (BMR) calculator to find out how many calories your body burns at rest, or the Ideal Weight calculator to determine your target ideal weight.
BMI Limitations
BMI does not differentiate muscle mass from body fat. Athletes and very muscular people may have high BMI without excess fat. For a more accurate assessment of body composition, use our body fat percentage calculator. Elderly and children have specific tables. Always consult a healthcare professional for complete evaluation.
Frequently Asked Questions about BMI
Is BMI reliable?
BMI is a useful screening tool widely accepted by the medical community. However, it is not a definitive diagnosis. It does not consider factors such as muscle mass, bone density, fat distribution and age.
What is the ideal BMI?
According to WHO, the ideal BMI for adults is between 18.5 and 24.9 kg/m². However, ideal weight may vary according to age, sex, muscle mass and other individual factors.
Does BMI work for children?
For children and adolescents, BMI is interpreted differently, using percentile charts that consider age and sex. Consult a pediatrician for proper evaluation.
How to improve my BMI?
To achieve a healthy BMI, combine balanced diet with regular exercise. Avoid radical diets. Seek guidance from a nutritionist and physical educator for a personalized and sustainable plan.
Does BMI consider age?
The standard BMI classification is the same for adults aged 20 to 65. For the elderly, some studies suggest that a slightly higher BMI (up to 27) may be healthier. Children and adolescents use specific tables.