Free BMI Calculator – Check Body Mass Index Instantly

Health Calculator

BMI Calculator

Calculate your Body Mass Index using metric or imperial units. Instantly see your BMI category, healthy weight range, and how your current weight compares with the normal BMI range.

Enter your details

Choose your unit system, enter your height and weight, then click calculate. The result appears below the calculator after clicking the button.

Formula: BMI = weight in kg ÷ height in meters squared. Imperial formula: BMI = 703 × weight in lb ÷ height in inches squared.
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Your BMI 0.0
BMI Category
Healthy Weight Range
Weight Used
Height Used
Normal BMI
18.5–24.9
Goal BMI
Weight used
Height used
Normal BMI range18.5 – 24.9
Weight change to normal range
Goal weight BMI
BMI is a screening tool and does not directly measure body fat, muscle mass, or overall health.