This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own Wacky Wizards session. It will not click the shop.
Material planner
Gem cost planner
Enter a gem price, how many times you want to buy it, and the gems you already have. The planner subtracts what you have from the total cost. Use it for a Hat of Gears, a legacy crate roll, or any other shop line whose price you can read.
Required total = materials per upgrade × number of upgrades. Missing = max(required total − materials already owned, 0).
The 300 default is the legacy crate roll listed on the October 2026 shop table, not a live price. Type the gem cost shown in your shop. Owned is the gem total you can see. The result is gems still short of per-unit cost times purchases. It does not read your account, and it does not apply the daily Oz or Glinda caps.