Item in slot
Scrolls used
Single Try Chance
Cost per Try
Total Spent
Drag the item and scrolls from the inventory into the slots, then press Confirm. Percentages update instantly for the set in the slots. Right-click something in a slot to send it back to the inventory.
Target Chain
Chance to Reach Target
Expected Cost
Step
Calculates only: doesn't touch the anvil, result comes instantly.
Puts the item and scrolls on the anvil itself, presses Confirm, waits for the result and repeats.
Single item chain: when the item burns it continues with the spare in the inventory.
Virtual Run Result
Pick a target and start the virtual run.
UcuzaGB Calc Engine
How is the anvil chance calculated?
The percent on screen and the percent that decides the attempt are read from the same table. So the chance you see is the real chance of the dice rolled here.
Three Steps
Pick an item
Search the item in the left box, set the starting level and throw it into the inventory with Add.
Build the set
Drag the item into the middle slot, BUS or BUS + Trina into the scroll slots. Enter prices on the left.
Compare
Try one by one with Confirm or pick a target and run a virtual series; follow both in the history on the right.
The Logic
Single try
The chance is read from the real rate table by the item's current level, whether it's normal or reverse, and the scroll set in the slots.
Chance to reach target
The chances of all steps in between are multiplied together. Going from +7 to +9 isn't two separate dice, it's one chain.
Expected cost
Each step's try cost (scroll prices + 10,000 Noah anvil fee) is multiplied by the chance of reaching that step and summed; item price × burn chance is added on top.
What It Ignores
Item value gain
The burned item's cost is taken from the price you entered, but the fact that a +9 is worth more than a +5 isn't counted.
Live market
Scroll prices are entered by hand; the servers' live market price isn't linked to this page.
Player decisions
Decisions like stopping at a level and selling aren't counted; the chain always runs to the target.
Rate Table
Normal item: BUS and BUS + Trina
The BUS column applies when Trina isn't in the slot, the Trina column when it is. An empty cell means that step isn't possible with that scroll. Every attempt also charges the 10,000 Noah anvil fee.
| Step | BUS | BUS + Trina |
|---|---|---|
| +1 → +2 | %100 | %100 |
| +2 → +3 | %100 | %100 |
| +3 → +4 | %100 | %100 |
| +4 → +5 | %75 | %100 |
| +5 → +6 | %55 | %70 |
| +6 → +7 | %30 | %50 |
| +7 → +8 | %10 | %30 |
| +8 → +9 | %1 | %2 |
| +9 → +10 | — | — |
Reverse item: Reverse Strengthen and Karivdis
Reverse Item Strengthen Scroll is used alone or together with Tears of Karivdis. Karivdis does nothing below +5, and raises the rate at +5 and above. On some weapon/shield type reverse items the +5 → +6 step is 20%.
| Step | Reverse Str. | Reverse + Karivdis |
|---|---|---|
| +1 → +2 | %100 | — |
| +2 → +3 | %30 | — |
| +3 → +4 | %30 | — |
| +4 → +5 | %30 | — |
| +5 → +6 | 30% (20% on some weapons) | %35 |
| +6 → +7 | %10 | %15 |
| +7 → +8 | %10 | %15 |
| +8 → +9 | %10 | %15 |
| +9 → +10 | %10 | %15 |
| +10 → +11 | %5 | %10 |
| +11 → +12 | — | — |
Reverse Scroll is a separate operation: it turns a +7 or higher normal item into a reverse starter, success chance 100%.
FAQ
Why doesn't my single try match the virtual run?
A single try is one dice roll; the virtual run is the average of thousands. Short-term deviation is normal, long-term it converges to the average.
Is setting aside the expected cost in Noah enough?
No. That number is an average; you can burn the item on the first try or land several in a row. Keep the budget above the average.
What makes total spent grow?
Every Confirm adds the price of the scrolls in the slots and the 10,000 Noah anvil fee; if the item burns its price is added too. Reset counter clears it.
Is my in-game item affected?
No. This is only a probability calculation running in your browser; it has no link to any game account or character.