GLP-1 Weight Loss Calculator
Estimate your timeline to goal weight on semaglutide or tirzepatide using average published response rates and weight tracking.
Weight Loss Timeline
Enter your current and goal weight to estimate time to goal
Estimated Timeline
Enter your weights to see your timeline
Estimated weeks to goal and monthly milestones
- 1Select the compound: Choose semaglutide or tirzepatide — each has a different average response in the published trials.
- 2Enter current and goal weight: In metric or imperial units.
- 3Read your timeline: Estimated weeks to goal at average response rates, plus projected milestones.
GLP-1 receptor agonists produce gradual weight loss over many months. Dose is titrated up over the first months, so early loss is often slower.
After titration, many people lose roughly 1–2% of body weight per month on average — faster early, tapering over time.
This is an illustrative model built on average published outcomes. Diet, activity, genetics, and adherence all change your individual trajectory.
Important Notes
GLP-1 medications require a prescription and are typically used for adults with BMI ≥30 or BMI ≥27 with a weight-related condition. This calculator provides estimates only and is not medical advice. Consult a healthcare professional before starting any medication.