![[🌗] Steal a Brainrot Calculator](/media/optimized/e8902c9b89fd78957f541ebf-498.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 purchase payback
Estimates how many cycles it takes for extra cash to earn back a brainrot price. Defaults are a reported sample, not a live shop price.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
The sample defaults convert a reported Gangster Footera figure of $30 per second into $1,800 per minute, against a $4,000 price. Replace both numbers with the offer on your screen. Multiply extra cash per second by 60 if you leave the cycle at 1 minute. The result ignores rebirth multipliers, mutations, traits, and the chance someone steals the unit.
Mutation value
Carpet mutation chance
Expected-value check for a red-carpet mutation chance. It does not replace the in-game income formula for a brainrot you already own.
Expected value per crop = base value × (chance × multiplier + 1 − chance).
Defaults match the red-carpet Rainbow row: 1 percent chance and a 10x multiplier. Gold is listed at 10 percent and 1.25x. Diamond is listed at 5 percent and 1.5x. This handler is an expected-value model. Income you already own uses base income times the sum of the mutation multiplier and each trait multiplier, which is a different calculation. The Rainbow Machine is said to raise the Rainbow chance by an unpublished amount.