How much weight will I lose on Ozempic?
Enter your weight and pick your medication — Ozempic, Wegovy, Mounjaro or Zepbound — to see your projected month-by-month loss from real clinical-trial averages. Then see it on your actual body.
Projected at 12 months on Ozempic / Wegovy:
| Month | Weight lost | Projected weight |
|---|---|---|
| Month 1 | −6.7 lb | 213.3 lb |
| Month 2 | −12.1 lb | 207.9 lb |
| Month 3 | −16.3 lb | 203.7 lb |
| Month 6 | −24.5 lb | 195.5 lb |
| Month 9 | −28.6 lb | 191.4 lb |
| Month 12 | −30.7 lb | 189.3 lb |
Estimates use average results from the STEP-1 (semaglutide) and SURMOUNT-1 (tirzepatide) clinical trials. Individual results vary with dose, diet, and activity. Educational only — not medical advice.
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GOALGLP-1 weight loss, answered
How much weight will I lose on Ozempic?
In the STEP-1 trial, people on semaglutide 2.4mg (Ozempic/Wegovy) lost about 14.9% of their body weight over 68 weeks, versus 2.4% on placebo. This calculator applies that average to your current weight to project a month-by-month timeline. Your real results depend on dose, diet, and activity.
Is the GLP-1 weight loss calculator accurate?
It uses the published average results from the landmark NEJM trials — STEP-1 for semaglutide and SURMOUNT-1 for tirzepatide — and models the typical curve (fastest loss around months 4-6, plateauing near 15 months). It's an educational estimate of the average, not a medical prediction for an individual.
How much more weight do you lose on Mounjaro vs Ozempic?
In trials, tirzepatide (Mounjaro/Zepbound) produced larger average loss than semaglutide: roughly 15% at 5mg, 19.5% at 10mg, and 20.9% at 15mg in SURMOUNT-1, versus ~14.9% for semaglutide 2.4mg in STEP-1. Pick your medication and dose above to compare.
Can I see what I'll actually look like after losing the weight?
Yes, that's the whole point. After you see your projected numbers, upload one photo and BodyTimeline's AI renders what you'll look like that much lighter, on your own frame. The preview is free with your email; the full renders and plan are a one-time unlock.
Is this medical advice?
No. This tool is for education and motivation only. GLP-1 medications are prescription drugs — talk to a licensed clinician about whether they're right for you, dosing, and side effects.
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