Projection Calculator
GLP-1 Weight Loss Projection Calculator
See an estimate of your possible weight loss on semaglutide or tirzepatide, based on clinical trial averages.
GLP-1 Weight Loss Projection
See an estimate of your possible weight loss on semaglutide or tirzepatide, based on clinical trial averages.
Your details
Turn the estimate into a real plan
A licensed AHC physician reviews your health and builds a personalized GLP-1 protocol. Compounded semaglutide from $129/month. Tirzepatide from $169/month. All online, no clinic visit.
Begin your free evaluationEstimate Your GLP-1 Weight Loss Journey
See realistic GLP-1 weight loss expectations, understand how progress changes over time, and learn how personalized medical care can help you achieve safe, sustainable, long-term results.
How much weight can you lose on a GLP-1?
In the landmark clinical trials, adults lost meaningful amounts of weight on both medications. Semaglutide averaged about 14.9 percent of body weight over 68 weeks in the STEP-1 trial, and tirzepatide averaged up to 22.5 percent over 72 weeks in SURMOUNT-1 at the highest dose. The projection above applies those averages to your starting weight so you can see a realistic ballpark.
How GLP-1 weight loss unfolds over time
Weight loss on a GLP-1 is usually fastest in the first few months, then slows as your body adapts and your dose stabilizes. That is why the curve above is steep early and flattens later, rather than a straight line. Reaching the trial average takes consistent use across the full period at the target dose, not a few weeks, along with healthy eating habits, regular physical activity, and ongoing lifestyle changes.
Turn the estimate into a plan
If the projection looks like the change you want, the next step is a real evaluation. AHC physicians review your health history and build a personalized GLP-1 protocol, all online with no clinic visit, with flat-rate pricing that never climbs as your dose increases, while providing ongoing clinical guidance, regular progress monitoring, and treatment adjustments when medically appropriate.
Medical Disclaimer: This tool provides estimates for informational purposes only and does not constitute medical advice. Results are based on published formulas and clinical reference data, and individual results vary. Compounded semaglutide and tirzepatide are not FDA-approved finished drug products. All prescriptions at Alternate Health Club are issued by independently licensed U.S. healthcare providers following individual patient evaluations. Consult a licensed healthcare provider before starting, changing, or stopping any treatment.
Also try: Body Fat Calculator · TDEE Calculator · BMI Calculator · Weight Loss Calculator
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Waist-to-Height Ratio Risk Categories
Based on BMC Medicine 2014 systematic review and U.S. Marine Corps 2026 fitness standards.
Medication | Average trial weight loss | Trial length | AHC flat price |
|---|---|---|---|
Compounded semaglutide | About 14.9% | 68 weeks (STEP-1) | From $129/month |
Compounded tirzepatide | Up to 22.5% | 72 weeks (SURMOUNT-1) | From $169/month |
What affects your actual results
- Reaching and staying at an effective dose, guided by your provider.
- Consistency, since results depend on continued use over many months.
- Protein intake and resistance training, which protect muscle and metabolism.
- Sleep and stress, which influence appetite hormones.
- Your individual biology, which varies from person to person.
Why this is an estimate, not a promise
The projection uses averages from trials of the branded medications. Your result can be higher or lower, and the trials did not study compounded versions. No tool can guarantee an outcome. Think of the number as a realistic reference point, then let a provider tell you what is appropriate for your health.
Physician-supervised GLP-1 care, flat-rate
Same price at every dose. No membership fees. Shipped to all 50 states.
FAQs — Weight Loss Projection Calculator
How much weight can I lose on semaglutide or tirzepatide?
In clinical trials, semaglutide averaged about 15 percent of body weight over 68 weeks and tirzepatide up to 22.5 percent over 72 weeks. The projection applies those averages to your weight. Individual results vary.