Free BMI calculator
BMI Calculator: calculate your BMI in seconds.
Enter your height and weight to get your Body Mass Index, BMI category, and commonly referenced healthy weight range. Free result first; optional roadmap only after you see your number.
Calculate BMI freeEducational tool only. Not medical advice, diagnosis, or treatment.
Step 1
Free BMI Calculator
Enter your height and weight to calculate your Body Mass Index and commonly referenced healthy weight range.
About BMI
What is BMI?
Body Mass Index (BMI) is a screening number based on height and weight. It does not measure body fat directly, but it is commonly used to understand whether weight is in an underweight, healthy, overweight, or obesity range.
BMI is a starting point, not a diagnosis. Your next step should consider habits, activity, health history, and goals.
FAQ
Questions before you buy
Is the BMI calculation free?
Yes. You can calculate your BMI and see your healthy weight range for free. The paid roadmap is optional after you see your result and preview.
What do I actually get if I buy?
The full roadmap includes your BMI interpretation, healthy range, educational targets, meal anchors, eating-pattern strategy, blocker strategy, a 7-day starter plan, and printable tracker.
Why pay when BMI calculators are free?
Free calculators give you a number. The roadmap helps turn that number into a realistic first week: what to focus on, what to track, and how to avoid your biggest blocker.
Is this a subscription?
No. Both options are one-time purchases.
Is this medical advice?
No. This is an educational planning tool. Talk to a qualified clinician before making medical decisions, especially if you have a medical condition, take medications, are pregnant, or have a history of eating disorder.
How do I receive the roadmap?
After checkout, Stripe redirects you directly to the roadmap page on this device. You can print it or save it as a PDF. Stripe sends the payment receipt by email; the roadmap itself is delivered on-site.
What if I close the page after purchase?
Use the browser/device you used to complete the quiz and checkout. If you lose access, contact support@bmiscale.com with your Stripe receipt and we can help.
What if it is not useful?
Contact support within 7 days. Refunds are reviewed based on whether the digital roadmap matched the description, not based on any health or weight outcome.