Ideal Weight Calculator for GLP-1 users.

No single formula is universally most accurate. Hamwi and Devine are common in clinical settings, while Robinson and Miller can give slightly different estimates. That's why this tool shows all four, so you can see a realistic range. Your healthcare provider can help you set a target based on your body composition and health history.

In clinical trials, GLP-1 medications have helped people lose roughly 15 to 25 percent of body weight over 12 to 18 months, though individual results vary a lot. A healthy BMI range (18.5 to 24.9) is often a better frame than a single number. This is general information, not a prediction for any individual.

Yes. These formulas don't account for muscle. If you're strength training while on a GLP-1, your healthy weight may be higher than the formulas suggest, because muscle is denser than fat. Focus on body composition rather than the scale alone.

Many people regain some weight after stopping. Building sustainable habits while on medication — movement, adequate protein, and consistent eating patterns — can help. Aiming to stay within your calculated healthy range, and working with your provider on any tapering plan, is a reasonable approach.