How long a goal takes is not an opinion — it is the same arithmetic as the budget, run forwards. The app shows this date beside the budget precisely so the two cannot disagree: change the pace and the date moves with it.
What this date is not
It is a straight line through a process that is not straight. Water, glycogen and gut contents move the scale by more than a week of careful eating does, which is why the app reads a 7-day moving average rather than single mornings — and why a date this far out should be read as a direction, not a promise.
It also assumes the deficit holds. Maintenance drifts as you get lighter and as a long deficit goes on, so the honest version of this number is one that is recomputed from your own recent weeks rather than fixed at the start.
Common questions
How long will it take to reach my goal weight?
It is the same arithmetic as the budget, run forwards: the gap to your goal converted at 7700 kcal per kilogram, divided by the daily deficit you chose. Change the pace and the date moves with it.
Is a goal weight date reliable?
It is a straight line through a process that is not straight. Water, glycogen and gut contents move the scale by more than a week of careful eating does, which is why the app reads a 7-day moving average rather than single mornings. A date this far out should be read as a direction, not a promise.
Why does the date move as I lose weight?
Because the estimate assumes the deficit holds, and maintenance drifts as you get lighter and as a long deficit goes on. The honest version of this number is one recomputed from your own recent weeks rather than fixed at the start.
Everything you type stays in this page. There is no account, nothing is saved to your device, and no figure is sent anywhere — the arithmetic runs in your browser and is thrown away when you close the tab. The constants it uses are the ones the app runs on, published at the methodology page.