How this works
The math
How it works
The tool draws the fitted straight line through your weigh-ins and extends it to your goal. It uses only what you enter, not trial results or averages from other people.
weekly change = slope of the fitted line × 7days to goal = (fitted weight today − goal) ÷ daily lossIt needs at least two weigh-ins two weeks apart. It won’t show a date past two years, or a date from entries that aren’t going down.
Real weight loss rarely stays straight. A 2025 joint advisory describes loss on GLP-1 medicines as generally faster at first, then slowing and leveling off.1 So treat this date as the early side of a range.
For example, weigh-ins of 232, 228 and 224 lb, each 14 days after the previous one, fit a loss of 2 lb per week. Extending that line reaches 200 lb 84 days after the final weigh-in. The line is strictly below 200 lb only after that crossing.
Before you act on this
This is arithmetic on your own numbers, not a prediction or a promise. Onederland is a personal milestone, not a medical goal.
If your weight is dropping faster than your prescriber expects, or you’re eating very little, tell your care team.
Always follow your doctor’s or prescriber’s advice and guidance. Talk to your prescriber before changing your dose.
For information only, not medical advice. Verify results with your healthcare provider; Onederland accepts no liability for use of these tools.
- Runs on this device. Nothing you type is sent anywhere.
- Every figure names its source, below.
- Education, not medical advice. Your prescriber comes first.
Sources
Sources
- Mozaffarian D, et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association and The Obesity Society. Obesity 2025;33(8):1475–1503 (corrected 2026). Accessed October 11, 2026. pmc.ncbi.nlm.nih.gov
Label sources last checked on October 30, 2026. Onederland summarizes them; your prescriber and the full prescribing information come first.
