![[💀] Steal a Brainrot Calculator](/media/optimized/7783e99bad275a7547c694dc-767.webp)
This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [💀] Steal a Brainrot session. It will not click the shop.
Upgrade payback
Brainrot payback
Estimate how long a Brainrot purchase takes to earn back its price from extra cash per minute. Use the price and income on your screen. For a full slot, enter only the income you gain over the unit you would remove.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
The sample uses Gangster Footera's reported 30 cash per second, converted to 1,800 cash per minute, against a 4,000 cash price and no income given up. Replace both figures with the offer on your screen. Multiply extra cash per second by 60, and leave the cycle at 1 minute. The result is a payback estimate in minutes. It ignores rebirth multipliers, mutations, traits, base skins, and the chance that another player takes the unit.
Mutation value
Mutation chance expectation
Estimate an expected cash-per-second figure when a reported mutation chance and factor apply to a base rate. Read the unit's displayed income for any real purchase.
Expected value per crop = base value × (chance × multiplier + 1 − chance).
The sample uses the widely reported Gold Red Carpet chance of about 10 percent and a 1.25 factor on a 30 cash-per-second base. This is an independent-chance expectation, not the income number the game prints and not a trait or rebirth formula. Replace every input with the copy and chance you are actually judging.