Interactive Tools
Calculators and simulators built from actual Minecraft game code. Java 26.2, no login required.
Self-hosting · Rented servers
Server RAM Calculator
How much memory your server needs, by player count, mods, and view distance. Includes the JVM flag and hosting plans that fit the result.
Natural farms · Spawner rooms
Mob Spawner Optimizer
Simulate AFK distance spheres (24 to 128m), evaluate spawning platforms, check spawner room dimensions and mob caps in real-time.
Clocks · Flying machines · Extenders
Clock & Piston Calculator
Build repeater clocks by period in ticks, ms, or seconds. Calculate flying machine speed and piston extender timing.
Overworld to Nether · Portal linking
Nether Portal Calculator
Convert coordinates between Overworld and Nether using the 8:1 scale ratio. Get exact portal locations and a build checklist.
Idle · Clicker · Just for fun
Ore Miner
A quick mining clicker: chip blocks through their crack stages, collect ore, and dig deeper for richer, tougher blocks. Best score saved in your browser.
- ▸Spawning spheres computed from actual Minecraft voxel distance checks (no approximation)
- ▸Repeater clock decomposition uses integer-exact tick arithmetic
- ▸Nether coordinate ratio is precisely 8:1 on X and Z; Y is independent
- ▸All calculations version-pinned to Java 26.2 game rules