The budget calculation
Spendable Moon Shards = max(0, balance − reserve). Whole attempts = floor(spendable ÷ the cost you enter). The remaining amount is shown separately.
Supernatural Realm Reroll Budget Calculator
Enter your Moon Shard balance and the reroll cost shown in the game. Choose a reserve and see how many attempts fit before committing to a character change.
Your entered costsNo predicted roll resultsCalculated in this tab
Your current amounts
Keep a Moon Shard reserve
Read the cost on the reroll you intend to use. All modes apply the same budget arithmetic; their labels do not assume equal game prices.
Calculated locally
Trait reroll budget
Enter a non-negative balance and a cost greater than zero. Use the cost displayed for your selected reroll.
Calculator inputs stay in this browser tab. No Roblox login is used.
Supply the actual cost
Balance and cost begin blank. Read the price on the intended trait, surname or height reroll rather than using a price from another menu or an older guide.
Budget and outcome are different
Enough Moon Shards for an attempt does not guarantee the result you want. This tool counts affordable attempts; it does not calculate a trait, surname or height probability.
Moon Shard budget questions
What does the Supernatural Realm calculator count?
It counts whole attempts affordable from the balance, current cost and reserve you enter, and compares that budget with a target attempt count.
Why are there several reroll modes?
Traits, surnames and height are different character choices. Their labels help you plan the intended action; each calculation still uses the price you enter.
Does an affordable attempt guarantee the result I want?
No. Budget arithmetic does not predict a roll result or its probability. Keep the decision to spend separate from a hoped-for outcome.
Does the calculator connect to my Roblox balance?
No. Enter the values yourself. The calculation runs in the browser tab and does not use a Roblox account.