Free BMI Calculator
Enter your height and weight to find your Body Mass Index (BMI) and the healthy weight range for your height. Free, instant, no signup.
What your BMI means
Body Mass Index is a quick way to gauge whether your weight is in a healthy range for your height. The standard categories are: under 18.5 (underweight), 18.5–24.9 (healthy weight), 25–29.9 (overweight), and 30 or above (obese).
BMI is a guideline, not a verdict
BMI does not measure body fat directly and does not account for muscle, so athletes can read as "overweight" while being lean. Treat it as one data point. What matters more day to day is a sustainable calorie balance — which is where photo-based tracking makes the difference.
Skip the math entirely
Snap a photo of your meal and MyDietJourney's AI counts the calories and macros for you — in about 2 seconds. 7-day free trial.