Steal An Egg Calculator
Pick what you want to work out: what a pet actually earns per second, how much Speed you still need, whether fusing three pets is worth the fee, or how long an egg takes to hatch. Type in the numbers you can see in game — weight, mutations, the price on the upgrade — and each calculator shows the result and the formula behind it. Everything runs in your browser.
Pet income calculator
Convert a visible payout into income per second, session earnings, and time to your money goal.
Income/s = payout ÷ payout interval in seconds
Online earnings = income/s × online minutes × 60
Pet weight, size and mutation calculator
Compare two copies of one species using their weight, displayed income, and visible modifier labels; keep size and mutation differences attached to the comparison.
Income per kg = displayed income/s ÷ weight in kg
Income per kg helps compare the pair. It does not establish a linear weight formula or predict an unmeasured mutation.
Compare pet weight and income →Speed and treadmill calculator
Use your current Speed, target, and measured gain per minute to compare training time before and after a treadmill change.
Minutes to target = max(0, target − current Speed) ÷ gain/min
Trail multiplier comparison
Compare two reported Trail multipliers against the same measured training baseline, then check the selected values in your live Trail Shop.
Estimated gain/min = baseline gain/min × Trail multiplier
Fusion calculator
Total the weight and income of three inputs, compare the fee with their earnings, and measure loss or gain once the resulting Egg hatches.
Weight retained (%) = output kg ÷ total input kg × 100
The captured 457kg + 256kg + 247kg Scorpions totaled 960kg and hatched an 86kg output: about 9% retained. That result shows a possible loss, not the odds of your next roll.
Calculate fusion risk and results →Hatch time calculator
Enter the visible growth time, Egg count, and available slots to calculate batches and how many Eggs fit into your session.
Batches = round up(Egg count ÷ slots)
Total minutes = batches × normal growth minutes ÷ growth multiplier
Upgrade and payback calculator
Compare a replacement Pet’s added income or the income from additional Base slots with the price shown on your upgrade panel.
Payback seconds = upgrade cost ÷ added income/s
A replacement uses candidate income minus the old Pet’s income. Extra slots use added slots × income per filled slot. Zero or negative added income produces no income payback.
Gamepass value calculator
Compare the time needed for your money goal or Egg growth plan with and without X2, after checking that the Pass covers that source or timer.
X2 scenario time = normal time ÷ 2
Money earning and Egg growth can happen together, so keep their time savings separate.
Compare Gamepass time savings →Not sure which one?
Choose your goal and the measurements you already have in the Calculator Finder.
Use the Calculator Finder →What these calculators can't do
They only use the numbers you type here. They can't read your Roblox account, your server, your pets or your inventory.
The formulas above describe the arithmetic these tools perform. Future fusion outputs, universal mutation stacking, exact income from weight alone, and offline earning rules require evidence beyond an entered number.
Common questions
How is pet income calculated?
Income per second = observed payout ÷ seconds between payouts. Session earnings = that rate × online minutes × 60. For example, $300 every 3 seconds is $100/s and $180,000 over 30 online minutes. Offline income requires a separately measured efficiency; the income calculator starts it at 0%.
Do mutations stack?
These calculators do not assume a universal stacking formula. Compare the displayed income of two copies of the same species, record their mutation labels, and keep other conditions equal. Income change = (income B ÷ income A − 1) × 100%. A single pair does not prove that mutation multipliers add or multiply across every combination.
Is treadmill training faster than running?
Compare the Speed gained over equal measured periods under the same boosts. Minutes to target = max(0, target Speed − current Speed) ÷ observed gain per minute. With a 900-Speed gap, 20 Speed/min takes 45 minutes; 35 Speed/min takes about 25.7 minutes. These example rates do not claim a universal running or treadmill rate.
Does fusing cost more than it earns?
Enter the three input incomes, the fee, and the hatched output income. Net income gain = output income − total input income. When that gain is positive, fee recovery time in seconds = fee ÷ net income gain. If the gain is zero or negative, the fee has no payback through that income change. Before hatching, the output and its payback remain unknown.
Why can a calculator result differ from the game display?
The estimate keeps your entered rate and conditions fixed. Rounded displays, temporary boosts, collection delays, different mutation states, a changed timer, or an upgrade can change the measured result. Use the same units and a longer controlled sample, then update the inputs. Weight alone does not establish a pet’s exact income.