Tools

GLP-1 Weight Loss Projection Calculator

Enter your starting weight and medication to see a science-based projection of your weight loss journey. Ranges reflect the distribution of outcomes in clinical trials — conservative, typical, and best-case scenarios.

For informational purposes only. Individual results vary. Consult your healthcare provider for personalized guidance.

Your Information

3 months12 months24 months

Conservative

150

lbs

-100 lbs

Typical

138

lbs

-112 lbs

Best case

125

lbs

-125 lbs

Month-by-month projections

Start
250 lbs
250 lbs
250 lbs
Month 3
215 lbs
199 lbs
179 lbs
Month 6
185 lbs
159 lbs
128 lbs
Month 9
159 lbs
138 lbs
125 lbs
Month 12
150 lbs
138 lbs
125 lbs
Conservative
Typical
Best case

Typical outcome at 12 months

Starting: 250 lbs
Conservative: 150 lbs-40%
Typical: 138 lbs-45%
Best case: 125 lbs-50%

How these projections are calculated

Projections use weekly weight-loss rates derived from clinical trial data (STEP and SURMOUNT trials) applied as a percentage of current body weight. Conservative reflects the 25th percentile of trial outcomes; typical reflects the median; best case reflects approximately the 75th percentile. Exercise multipliers reflect real-world data showing resistance training improves body composition outcomes by 8–22% compared to medication alone.

Weight loss is not linear — expect faster loss early and gradual slowing as you approach goal weight. Plateaus of 4–6 weeks are normal. These projections assume consistent adherence and do not account for dose titration delays or side-effect-related dose holds.

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