GLP-1 Weight Loss Projection Calculator

See projected weight loss timelines for Semaglutide, Tirzepatide, and Retatrutide based on published clinical trial data including dose escalation schedules.

Current Weight

Goal Weight

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Age

Sex

Medication

Semaglutide (Wegovy)

~15% body weight loss over 68 weeks (STEP-1 trial)

Tirzepatide (Zepbound)

~22.5% body weight loss over 72 weeks (SURMOUNT-1 trial)

Retatrutide

~28.7% body weight loss over 48 weeks (Phase 3 trial)

Medical Disclaimer

This tool is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. Results are estimates based on published clinical trial data and population averages — individual results may vary significantly.

Always consult a qualified healthcare provider before starting, stopping, or modifying any peptide therapy or medication. Do not make medical decisions based solely on this tool.

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