Why BMI matters for GLP-1 medications
BMI isn't just a health metric — it's the gate that determines whether you can be prescribed a GLP-1 for weight loss. The FDA approved Wegovy, Zepbound, and Saxenda for chronic weight management at a BMI of 30 or higher, or 27 or higher with a weight-related condition. Diabetes-indicated GLP-1s like Ozempic and Mounjaro follow different criteria.
That's why this calculator does double duty: it gives you the standard BMI number and immediately tells you which side of the eligibility line you fall on, so you know whether a telehealth consult is worth your time before you book one.
What we do — and don't — do
GLP1Zoom doesn't prescribe, sell, or ship medication. We're an independent comparison site: we assess your situation and point you to licensed telehealth providers who handle the prescription. If your BMI suggests you're a candidate, take our 60-second quiz to match with a medication and provider, or compare GLP-1 options side by side.
FAQ
How do I calculate my BMI?
BMI = your weight divided by your height squared. In US units the formula is 703 × weight(lb) ÷ height(inches)². A 5'6", 190 lb person has a BMI of about 30.7. This calculator does it instantly — just enter your height and weight.
What BMI do you need to qualify for Wegovy or Zepbound?
FDA-approved weight-management GLP-1s (Wegovy, Zepbound, Saxenda) are indicated for adults with a BMI of 30 or higher, OR a BMI of 27 or higher who also have a weight-related condition such as type 2 diabetes, high blood pressure, high cholesterol, sleep apnea, or heart disease. A licensed clinician makes the final decision.
Is BMI an accurate measure of health?
BMI is a useful population-level screening tool but has limits: it does not distinguish muscle from fat, so very muscular people can read as "overweight," and it does not capture fat distribution. Clinicians use it alongside waist circumference, lab work, and medical history — not on its own.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5-24.9. Overweight: 25-29.9. Obesity class I: 30-34.9. Class II: 35-39.9. Class III (severe): 40 and above. The obesity classes are where FDA weight-management GLP-1 eligibility typically begins.