This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own Sell a Million Sushi session. It will not click the shop.
Material planner
Same-tier merge counter
Counts how many fishermen of one type a single 3-to-1 merge needs. Enter 3 as the number consumed per merge unless the in-game prompt shows a different count. This does not price the Hire pad, and it does not climb more than one tier.
Required total = materials per upgrade × number of upgrades. Missing = max(required total − materials already owned, 0).
The opening tutorial merges three Tier 1 fishermen into one Tier 2. Sportskeeda describes the same 3-of-a-kind step repeating up the ladder. If your merge prompt asks for a different number, change the first field before you trust the result.
Upgrade payback
Chef upgrade payback
Estimates how long a chef upgrade takes to pay for itself from extra cash per cycle. Type the price shown on the chef button and the extra cash you actually gain. The game does not publish one fixed upgrade price.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
Defaults are blank examples, not in-game prices. A cycle is one trip from deposit to the green money pad. If the chef is idle because no fish is deposited, the extra profit is zero and the upgrade is not the bottleneck.