What is BMI?
BMI is a simple comparison of your weight and height. It places the result in a standard adult weight range.
BMI Calculator
Why it helps
It is a quick screening starting point, but it cannot distinguish muscle from body fat or diagnose your health.
Your BMI
–
–Under 18.5 underweight · 18.5–24.9 healthy · 25–29.9 overweight · 30+ obese.
How this result was calculated
BMI divides weight in kilograms by height in metres squared. Change an input to see the exact numbers used.
Numbers are a starting point.
Gram Fit turns them into a plan that adapts every week. Log meals in seconds and get AI coaching toward your goal.
These calculators give general estimates for educational purposes and are not medical advice. Talk to a doctor or dietitian before making significant changes, especially during pregnancy or with a health condition.