Steal An Egg income calculator
Pick a pet, enter the weight shown in game, then choose its colour (Rainbow, Golden, Silver) and any mutations. The result is saved in the link so you can share it.
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How it is calculated
Income per second = base income × size multiplier × (1 + sum of (each multiplier - 1)) × number of pets.
The size multiplier comes from the weight ratio (your weight ÷ base weight): ratio^(5/3) below base weight, ratio^(37/60) up to 125×, and ratio^(2/5) × 125^(13/60) above that.
Formula and base weights come from the community wiki, whose own calculator is marked beta; game updates can change them.
Questions
What weight do I enter?
The weight in kg shown on the pet card. Each pet has a base weight listed on the community wiki, and the ratio between the two sets the size multiplier.
Do two mutations multiply?
No, they add. The multiplier is 1 + the sum of (each multiplier - 1). Example: Rainbow ×3.5 + Parasite ×3 → ×5.5.
What if my pet is lighter than its base weight?
Below base weight the multiplier is ratio^(5/3), so income drops quickly: half the base weight gives about ×0.31.
Source: Module:IncomeCalculator/Data (rev 2021, Sep 30, 2026), Mutations (rev 1822, Sep 20, 2026), Pets and Eggs (rev 2161, Oct 14, 2026), MediaWiki:Common.js (rev 1790, Sep 20, 2026) · Steal An Egg community wiki, CC BY-SA 3.0. Numbers restructured into tables.