GLP-1 Weight Loss Calculator

Written by Bariatric Journal Editor on April 21, 2026 — Medically Reviewed by Bariatric Journal Editor

GLP-1 Weight Loss Calculator

Estimate your possible weight-loss range with semaglutide, tirzepatide, or retatrutide-style treatment profiles. This page gives readers a simple starting point before they discuss results, dosing, and expectations with a clinician.

Bariatric Journal calculator

GLP-1 expected weight loss calculator

Foot
Inches
Total estimated weight loss
Estimated body-weight change
Projected weight
Projected BMI
BMI category

* Educational use only. Estimates are based on published trial-style averages and do not guarantee individual results.

What this calculator helps visitors understand

The GLP-1 Weight Loss Calculator Estimator helps readers model a possible range of body-weight change over time using medication-specific average profiles. It works best as an educational planning tool for people comparing options like Wegovy, Ozempic, Zepbound, Mounjaro, compounded semaglutide, compounded tirzepatide, and retatrutide.

Visitors can enter a starting weight, review a projected percentage change, and see how different treatment timelines affect estimated results. The page should make clear that actual weight loss depends on adherence, dose escalation, side effects, nutrition, physical activity, sleep, and medical supervision.

How the estimator works

  • Choose a medication: Select semaglutide, tirzepatide, or retatrutide-style options from the list.
  • Enter your starting point: Add current weight, height, and your planned time on treatment.
  • Review your estimate: The calculator shows projected weight loss in pounds, percentage change, and a new estimated body weight.
  • Use it as a conversation starter: Bring the estimate to your clinician to discuss realistic expectations and dose progression.

Important disclaimer

This estimator is not medical advice and does not replace a prescription plan. Compounded medications may vary by pharmacy, concentration, and formulation, so dosing and outcomes are not interchangeable with branded products.

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GLP-1 from $179
  • Lose Weight, Feel Great
  • No Insurance Needed
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