Ideal Weight Calculator for GLP-1 users.

No single formula is universally most accurate. The Hamwi and Devine formulas are commonly used in clinical settings, while Robinson and Miller tend to give slightly different estimates. That is why this calculator shows all four results so you can see a realistic range. Your doctor can help you determine the best target based on your individual body composition and health history.

Clinical trials show that GLP-1 medications can help people lose 15 to 25 percent of their body weight over 12 to 18 months. However, your ideal target depends on your starting weight, health conditions, and personal goals. Most healthcare providers recommend aiming for a healthy BMI range of 18.5 to 24.9 rather than a single number, and losing 1 to 2 pounds per week for sustainable results.

Yes, these formulas do not account for muscle mass. If you are strength training while on GLP-1 medications, which is highly recommended, your ideal weight may be higher than what the formulas suggest. Muscle is denser than fat, so a muscular person at a higher weight can be healthier than a sedentary person at their formula-calculated ideal weight. Focus on body composition rather than the scale alone.

Research shows that people tend to regain some weight after stopping GLP-1 medications. The key is to establish sustainable habits while on medication, including regular exercise, adequate protein intake, and healthy eating patterns. Aim to maintain a weight within your calculated healthy range. Working with your healthcare provider on a gradual tapering plan can help minimize weight regain.