My Giant Sandwich Calculator
Compare an upgrade, project one offline test, or plan a taller sandwich. Every answer comes from your own observations and a formula you can inspect.
Ready when you are
Fill every field, then calculate. The formula is shown below before you commit to any choice.
See the formula
shortfall = max(cost − cash, 0)
payback = cost ÷ (new income − current income)Turn the number into a next step
Calculator questions
Does this use an official My Giant Sandwich formula?
No. Each mode shows simple arithmetic based on values you enter from your game. No hidden game rate is added.
Why is the offline result called uncapped?
Offline earnings are mentioned by the game, but a public cap, minimum away time, and multiplier rules have not been documented. The estimate extends only your personal observation.
What should I enter for sandwich height?
Use whichever height value your game shows, and keep that same unit for current height, target height, and average progress.
Are my calculator values saved or sent to analytics?
No. The calculation runs in your browser, and the numbers you enter are not saved or included in analytics events.