Video Games
Video game calculators are organized by game or genre: Dungeons & Dragons for tabletop character building, Minecraft for in-game building and world-generation math, and a general gaming subcategory for mechanics like kill/death ratios and Elo ratings that apply across many titles.
Categories in Video Games
Dungeons & Dragons Calculators
Point-buy ability score allocation, hit points at a given level, and encounter difficulty balancing for a party of a given size and level: Dungeons & Dragons 5th Edition math, built around the rules in the 5e core rulebooks.
General Gaming Calculators
Mechanics that show up across many different games rather than one specific title live here: social-deduction odds like those in Among Us, kill/death ratio tracking, and Elo rating changes for any competitive ranking system.
Minecraft Calculators
Converting item counts to stacks and storage containers, planning circular and pyramid structures block by block, triangulating a stronghold's location from Eye of Ender throws, and checking whether two Nether portals will link to the same exit.