Fake an Egg calculator

I kept the math to division you can check. Time to afford a price is the gap between that price and your cash, divided by income per second. Payback is the price divided by how much income per second the new pet adds. Offline cash is income per second times hours times 3600. If income is zero, the timer stays blank instead of dividing by zero.

This is a constant-rate estimate, not a prediction of actual offline rewards. Caps, feeder expiry, weather, time spent hatching, and income changes are not modeled. No mutation multiplier is added to a displayed total.

For rebirth, enter the ratio of next income to current income, not an absolute bonus. Extra income = current income × (ratio − 1). Cash-only rebirth payback = cash lost ÷ extra income. Example using hypothetical inputs, not game facts: cash 100, income 10/s, target 300, new-pet gain 5/s, ratio 1.5 gives 20 seconds to afford, 60 seconds pet payback, and 20 seconds to recover the lost cash. At one offline hour, the constant-rate model yields 36,000 cash. Later rebirth costs and the ratio are never prefilled. Sources for inputs: rebirth, pets, eggs.

Last checked 2026-10-28. The form uses only numbers you enter.