Tools for Minecraft servers
Small tools for setting up a server and playing on one. They all run in your browser, so nothing you type is sent anywhere.
Server setup
server.properties generator
Fill in the common Minecraft server settings with plain explanations and download a ready server.properties file.
Startup flags generator
Make a Java start command for a Paper or vanilla server with the right memory and Aikar's garbage collection flags.
Offline UUID generator
Work out the UUID an offline-mode Minecraft server gives a player name, and build whitelist.json or ops.json entries.
Tick calculator
Convert game ticks to real time and back, read /time values as a clock, and work out redstone delays.
Text and chat
MOTD generator
Write a coloured two-line server MOTD, preview it as it looks in the server list, and copy the line for server.properties.
Colour codes
Every Minecraft Java colour and formatting code with its hex value and JSON name. Click a code to copy it.
Tellraw generator
Build a /tellraw command from coloured, styled pieces of text with a live chat preview. Works on Java 1.16 and later.
Building and exploring
Nether portal calculator
Convert Overworld coordinates to the Nether and back, so linked portals land where you want them.
Chunk calculator
Find which chunk and region file any block is in, with chunk borders and the matching .mca file name.
Slime chunk finder
Enter a Java Edition world seed and see which chunks spawn slimes, on a map around any coordinates.
Seed converter
See the number Minecraft Java turns a text seed into, so you can share it or use it in other seed tools.
Circle generator
Get a block-by-block pattern for a circle or oval of any size, filled or as an outline, with block counts.
Stack calculator
Turn an item count into stacks, shulker boxes and chests, or the other way round.