Semaglutide Calculator for Weight Loss
Calculate semaglutide dosage schedules, projected weight loss, and treatment timelines based on your personal parameters and clinical guidelines.
How to Use This Calculator
- Enter your current weight and target weight in kilograms
- Input your height in centimeters for BMI calculation
- Specify your current and target semaglutide doses
- Set the planned treatment duration in weeks
- Click Calculate to view your personalized weight loss projection and dosage schedule
Formula Used
BMI = Weight (kg) ÷ Height² (m²)
Volume (mL) = Dose (mg) ÷ Concentration (mg/mL)
Where:
- BMI = Body Mass Index
- Weight = Current body weight in kilograms
- Height = Height in meters
- Volume = Amount of medication to administer
- Dose = Prescribed semaglutide amount
- Concentration = Strength of compounded medication
Example Calculation
Real-World Scenario:
A 45-year-old female patient weighs 95 kg and is 165 cm tall. She wants to reach a target weight of 70 kg. She's starting semaglutide at 0.25 mg with a target dose of 2.4 mg.
Given:
- Current Weight = 95 kg
- Target Weight = 70 kg
- Height = 165 cm (1.65 m)
- Starting Dose = 0.25 mg
- Target Dose = 2.4 mg
- Concentration = 5 mg/mL
Calculation:
BMI = 95 ÷ (1.65 × 1.65) = 34.9 (Obesity Class I)
Starting Volume = 0.25 mg ÷ 5 mg/mL = 0.05 mL
Target Volume = 2.4 mg ÷ 5 mg/mL = 0.48 mL
Result: Based on STEP trial data, the patient can expect to lose approximately 15% of body weight (14.25 kg) in 68 weeks, reaching a weight of 80.75 kg.
Why This Calculation Matters
Practical Applications
- Provides realistic weight loss expectations based on clinical data
- Helps plan medication supply for treatment duration
- Creates a personalized titration schedule for optimal results
Key Benefits
- Reduces side effects through proper dose titration
- Optimizes weight loss outcomes with appropriate dosing
- Helps estimate medication costs and supply needs
Common Mistakes & Tips
Frequently Asked Questions
References & Disclaimer
Medical Disclaimer
This calculator is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider before starting or adjusting any medication. The dosage calculations provided should be verified by a qualified medical professional.
References
- STEP 1 Trial: Semaglutide 2.4 mg for Weight Management - Wilding et al., New England Journal of Medicine, 2021
- STEP 4 Trial: Effect of Continued Weekly Subcutaneous Semaglutide vs Placebo on Weight Loss Maintenance - Rubino et al., JAMA, 2021
- FDA Warning on Compounded Semaglutide - FDA Safety Communication, 2023
Accuracy Notice
This calculator provides estimates based on clinical trial data and mathematical models. Individual results may vary based on factors including diet, exercise, genetics, and adherence to treatment. The calculations should be used as a starting point for clinical decision-making, not as a substitute for professional medical judgment.
About the Author
Kumaravel Madhavan
Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.