About
A quiet corner of the internet for people on GLP-1s.
GLP1Tree is an independent, ad-supported site that builds free calculators and explainers for the millions of adults now taking GLP-1 receptor agonists for weight loss and metabolic health. We aren't a clinic, we aren't selling compounded versions, and we aren't affiliated with any pharmaceutical manufacturer.
Methodology
Every projection on this site is anchored to peer-reviewed clinical trial results — STEP-1 for Wegovy, SURMOUNT-1 for Mounjaro and Zepbound, SCALE for Saxenda, and the PIONEER program for Rybelsus. We use mean efficacy at trial endpoint and interpolate weekly progress with an S-curve to reflect the rapid early loss and gradual plateau seen in real-world data.
Calorie and protein calculators use the Mifflin-St Jeor equation and the ISSN position stand on protein, respectively. Cost estimates are based on publicly listed 2024–2025 list prices and publicly disclosed manufacturer savings card terms.
Medical disclaimer
The information on GLP1Tree is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or medication. Never disregard professional medical advice or delay in seeking it because of something you have read on this site.
Editorial policy
We cite primary sources — FDA prescribing information, NEJM, Lancet, and government health bodies — wherever possible. We update calculators when new trial data is published. We don't accept paid placements, and we don't run sponsored content. Display ads (via Google AdSense) are clearly labeled as advertisements and don't influence editorial content.
Contact
Spotted an error in a calculator, or have a clinical correction? We want to hear from you. Email hello@glptree.com.