Purchase formula
Spendable = max(0, budget − reserve). Affordable attempts = floor(spendable ÷ entered cost).
Survive The Night Pet Hatch Calculator
Enter your Gem balance and the selected hatch price, then protect a reserve and see how many purchases fit the remaining budget.
Your entered pricesTransparent purchase mathRuns in your browser
Your live values
Set a spending limit
The observed Epic hatch option cost 50 Gems. Enter the price of the option you intend to buy and the balance you want to use.
Calculated locally
Pet hatch budget
Enter a non-negative budget and a cost greater than zero. The cost should come from the live game panel.
The tool uses only the numbers entered. No Roblox login is needed and no hatch outcome is predicted.
Choose the hatch price
The observed Epic option costs 50 Gems. Enter the price for the option you plan to buy; the input stays under your control.
A budget is not a hatch prediction
The result counts affordable purchases. It does not predict pet species, rarity, odds or a guaranteed collection outcome.
Calculator questions
What does this calculator count?
It counts affordable purchases using your budget, reserve and entered cost. The target check shows whether the chosen attempt count fits.
How do I use the observed Epic price?
Enter 50 as the cost for that option, enter your Gem balance and choose a reserve. The calculation rounds down to whole attempts.
Does it predict Bird or Epic results?
No. Purchase arithmetic does not predict which pet a hatch produces.
Are the entered values submitted?
The calculation runs in your browser and does not request a Roblox account.