Kalkuly
EN
BMI calculator
The body mass index (BMI) compares weight to height. It is a quick screening indicator for adults used by the World Health Organization.
Your BMI
1618.5253040
Rate this tool
How to use it
Enter your weight in kilograms and your height in centimetres. The BMI and its category are displayed immediately.
Formula and method
BMI = weight (kg) ÷ height (m)². WHO adult categories: under 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30 and over obesity.
Worked example
80 kg and 1.80 m: BMI = 80 ÷ (1.80 × 1.80) = 80 ÷ 3.24 = 24.7, which is a normal weight.
Frequently asked questions
What is the BMI formula?
BMI = weight (kg) ÷ height² (m). For 70 kg and 1.75 m: 70 ÷ 3.0625 = 22.9.
Is BMI reliable?
It is a simple indicator that does not distinguish muscle from fat and is not suited to children, pregnant women or athletes. Talk to a doctor for a real assessment.
Other useful tools
🥗Calorie calculatorFree calorie calculator: estimate your basal metabolic rate and how many calories you need…🤰Due date calculatorFree pregnancy due date calculator: estimate your due date, how many weeks pregnant you ar…%Percentage calculatorFree percentage calculator: find X% of a number, what percent one number is of another, an…🎂Age calculatorFree age calculator: get your exact age in years, months and days, the total number of day…🏦Loan calculatorFree loan and mortgage calculator: find your monthly payment, the total amount repaid and …📝Word counterFree online word counter: count words, characters with and without spaces, sentences and p…