What Does a Daily Habit Cost You Over 10 Years?
See the long-term weight and financial impact of a daily dietary habit — from a soda to a latte to a candy bar.
How the math works
Roughly 3,500 excess calories equals 1 lb (0.45kg) of body weight — a long-standing simplified planning approximation, not a precise measurement of how any individual's body converts a caloric surplus. A single daily habit at 150 extra calories (one regular soda is a common example) compounds to roughly 7kg of potential weight gain over a year if nothing else changes. The model deliberately assumes all extra calories become weight gain, which doesn't capture metabolic adaptation or compensating activity changes — it's a directional illustration of scale, not a personal forecast.
The financial side compounds too: beyond direct spending (daily cost × days), the tool also computes the opportunity cost if that same money had been invested instead — a small daily habit carries a physical cost and a financial one simultaneously.
Where this doesn't apply
- The body doesn't respond as a perfectly linear calorie-in-calorie-out system — metabolic adaptation and activity changes mean real results commonly diverge from the projection.
- This isolates one habit, not your total diet — offsetting reductions elsewhere aren't modeled.
- Non-caloric health effects (dental health, blood sugar spikes) of a given habit aren't captured here.