BMI Calculator
& Body Visualizer
Instantly calculate your Body Mass Index (BMI) and discover your Ideal Weight range. Then, use our AI to visualize specifically what that healthy weight would look like on your body.
Calculate Your BMI
Your BMI Score
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What is BMI (Body Mass Index)?
Body Mass Index (BMI) is a widely used screening tool that estimates body fat based on your height and weight. It applies to adult men and women and helps categorize weight into four main groups:
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5 to 24.9
- Overweight: BMI 25 to 29.9
- Obese: BMI 30 or higher
While BMI is a useful starting point, it doesn't distinguish between muscle and fat. That's why we recommend using ourAI Visualization Toolto see a realistic preview of your body composition goals, rather than just chasing a number.
How to Calculate BMI
Metric Formula
BMI = weight (kg) / [height (m)]²Imperial Formula
BMI = 703 × weight (lbs) / [height (in)]²Frequently Asked Questions
Is BMI accurate for bodybuilders?
No. Because muscle is denser than fat, muscular individuals may have a high BMI despite having low body fat. For athletes, body fat percentage is a better metric.
What is a healthy BMI for women vs men?
The standard BMI chart is the same for adult men and women. However, women naturally tend to have higher body fat percentages than men at the same BMI.
How can I visualize my weight loss?
You can use the BeforeAfterFit AI Simulator. Upload a photo, set your goal weight (based on your healthy BMI), and see a realistic preview of your transformation in seconds.
Want to see your future self?
Stop guessing. Our AI generates a hyper-realistic preview of your body at your goal weight.
- Visualize muscle gain vs fat loss
- See face changes & jawline
- Motivate your journey
Trusted by Learners
"Seeing my 'after' photo made the goal feel real for the first time. I downloaded it and set it as my wallpaper."
Sarah M.
Lost 25 lbs