![[EVENT] Pull a Sword Calculator](/media/optimized/3394b0a174e92eafa3278f35-768.webp)
This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [EVENT] Pull a Sword session. It will not click the shop.
Material planner
Crafting piece shortfall
Subtract the pieces you already hold from the pieces a craft requires. Use 3 for a typical mega-boss sword, or the pet-tier piece count from the crafting guide.
Required total = materials per upgrade × number of upgrades. Missing = max(required total − materials already owned, 0).
The default of 3 pieces matches the usual mega-boss sword craft printed for worlds such as Volcano Cave, Glacier Peaks, and Desert Island. Pet-tier crafts use much larger piece counts. Replace the defaults with the craft you are making. The form only subtracts owned pieces from pieces per craft times crafts wanted. It does not read your inventory.
Drop probability
At least one hatch or spin
Estimate the chance of at least one success over independent tries. Enter the percent shown on the egg or wheel you are using.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
The 0.01 default is the published 0.01 percent chance of Frozen Brick Parrot from the Ocean frozen-brick egg, not a live rate for every egg. The result is the chance of at least one success if each try is independent. Pity, luck potions, and boosted servers are not in the formula because no single public formula covers them.