A tick is one cycle of the game loop.

Game tick

The game loop runs at 20 ticks per second, so one tick counts as 120 of a second, or 0.05 seconds. An in-game day lasts 24,000 ticks or 20 minutes. Ticks do not affect the game's FPS.

Chunk tick

On every game tick, all chunks within the render distance of a player and within 128 of a player are ticked.

This can have various effects.

  • During a thunderstorm, lightning will strike somewhere in that chunk (1100000 chance).
  • 116 chance that one column of the chunk is chosen for weather checks on the topmost block.
    • If the chunk is in a cold biome, water freezes into ice.
    • If it is snowing in the chunk, a snow layer is placed.
    • If it is raining in the chunk, a cauldron is filled.

Redstone tick

A redstone tick spans the length of two game ticks, so one redstone tick counts as 110 of a second, or 0.1 seconds. By default, a redstone line doesn't take any time to travel, but a redstone repeater increases the delay by 1-4 ticks, depending on what it is set to.

Community content is available under CC-BY-SA unless otherwise noted.